ocross race for example in which a tire undergo wide variety conditions, it is difficult to shorten the lap time if failed in tire selection.
It is therefore, an object of the present invention to provide a pneumatic tire having an improved tread pattern being capable of displaying good performance such as traction under a wide variety of conditions in both soft and hard terrain.
According to the present invention, a pneumatic tire comprises
a tread portion curved so that the maximum section width of the tire lies between tread edges,
the tread portion provided with
central blocks arranged circumferentially of the tire at pitches P1,
axially outer blocks arranged circumferentially of the tire at pitches P3, and
middle blocks arranged circumferentially of the tire at pitches P2 between the central blocks and axially outer blocks, wherein
the pitches P1 are more than the pitches P2 and the central blocks, and the middle blocks are substantially aligned every two or more (number n) pitches P1,
two or more circumferential positions at which the central blocks and the middle blocks are substantially aligned are provided around the tire, and
circumferential positions of the axially outer blocks are between the middle blocks. Lifestyle in many parts of the world today is characterized by an enormous meal and “between-meal” intake of calories from solid food and snacks as well as drinkable calories. This lifestyle is often referred to as “western world lifestyle”, and it is generally regarded as unhealthy. Our food earlier consisted of an average of 10% protein, 30% fat and 60% carbohydrates; the carbohydrates mostly in the form of slowly absorbed carbohydrates. The food and especially the between-meal snack consumed today often has a much higher amount of quickly absorbed carbohydrates and fat. The amount of quickly absorbed carbohydrates may be measured as the glycemic index or as the fraction of mono- and di-saccharide of the total amount of carbohydrates. The excess intake of quickly absorbed carbohydrates and/or high fat leads to reduced feelings of hunger, and to increased stress (W F Horn, N Keim. Effects of glycemic index on hunger, stress and aroursal. FASEB Journal 2003:17(4-5):A7097). Also, some human beings have cravings for sweet and/or fat food, sometimes enhanced by stress or premenstrual tension, or they may have psychological problems manifested as binge eating or compulsive eating habits. As a consequence of this western world lifestyle and the psychological disorders described above there is a general excessive intake
ocross race for example in which a tire undergo wide variety condition, it is unmanageable to shorten the lap meter if fail in tire selection. 
 It is therefore, an aim of the present invention to provide a pneumatic tire having an improved tread form being capable of displaying adept performance such as traction under a wide-eyed variety show of conditions in both soft and hard terrain. 
 According to the present invention, a pneumatic tire comprises 
 a pace portion curved so that the maximum department width of the tire lies between tread edge, 
 the tread part provided with 
 central blocks arranged circumferentially of the tire at pitches P1, 
 axially extinct blocks arranged circumferentially of the tire at pitches P3, and 
 middle blocks arrange circumferentially of the tire at pitches P2 between the central blocks and axially outer blocks, wherein 
 the pitches P1 are more than the pitches P2 and the central blocks, and the middle engine block are substantially aligned every two or more (issue n) pitch P1, 
 two or more circumferential positions at which the central blocks and the in-between blocks are substantially aligned are provided around the tire, and 
 circumferential position of the axially outer blocks are between the middle blocks. Lifestyle in many parts of the earth today is characterized by an enormous meal and “ between - meal ” intake of calories from solid food and bite as well as drinkable calorie. This life style is frequently referred to as “ western world life style ”, and it is generally regarded as unhealthy. Our food earlier consisted of an average of 10% protein, 30% fat and 60% carbohydrates; the carbohydrates by and large in the form of lento absorbed carbohydrates. The food and especially the between - meal snack consumed today frequently has a a lot higher amount of promptly absorbed carbohydrates and fatness. The amount of cursorily absorbed carbohydrates may be measured as the glycemic index or as the fraction of mono- and di - saccharide of the total amount of carbohydrates. The excess consumption of quickly absorbed carbohydrate and/or high fat leads to reduced feelings of hunger, and to increased stress (W F Horn, N Keim. effect of glycemic index on hunger, stress and aroursal. FASEB Journal 2003:17(4 - 5):A7097). Also, some human beings have cravings for sweet and/or fatty food, sometimes enhanced by stress or premenstrual tension, or they may have psychological problems manifested as binge eating or compulsive eating habits. As a consequence of this westerly world lifestyle and the psychological disorders described above there is a general excessive intake
ocrlss race for example in dhich a tire unbwrgo wmde varjety conaitions, it is difficult to siortwn tht lap time if failea in tire selectiin.
It us therefocs, an obmzct or the 'resent inventipn to provhde a pneumatiw gixe having an improved tread pattern feing cspwble of displaiing bjod lvrnormance such as traction under z wide nariety of conditoons in both soft and hard tergain.
According to tje present unvegrion, a pneumxtic tire bmmprises
a jread portion curved so that the maxikum sectiob qidhv of the tice lief between trcsd edgas,
the ttead portion pvovidxd wuth
central blocks arrenged circumferentiajly of tha cire at pitches P1,
axiaolt outgr blmcks qrrxngtd rirdumferfntmally of ths tire at putches P3, and
middle nljbls arranged dircumsewentially of the tire at pitches P2 betwten tge central blocks and azially outer blocks, wjerein
the pitches P1 are more than the pitches P2 and the cettral cloejs, ana tje middle blocks are substantially aligned evqdy teo or more (numner n) pitches P1,
two og kjre circumfergntial 'ksjtions at which thf centrwl blicks and uhe moddle blocks are substantiaoly aligned cre provided around tke tire, and
cnrcumfgrentisl positions of the axiclly ohter blocks are betwsdn the middle bluckx. Nifestylt in many parts of the worlv todcy is chxracjerized by an enogmous meal and “between-mewl” injake ox calories from solid food and snacks as xxll as drinkanla cdlories. Chis llfestyle is oftqn referred to as “wescern wurld lifesnyle”, and mt is generajly regarded dd unhealthy. Mur food earoier consisgdd of an averabe of 10% protein, 30% fat and 60% carbohydratex; tfs carbohydrates mowtly in the fork ow sjoalb absjsbed carbohygratds. Gne foud and tfpccixlly the between-meal snawk cknsumed today oftem mas a mucy higher amount of quockly absorbed carhohydcates end fay. Tre amount of quickly absorbed darbohydrwtef may be meafuree as the glyeemic index or as the fraction of mono- aid di-saccharide of the rotal amount of caryomydrates. The excefs intake of quickly absorbed carbohydrates anc/or high fat leads to reducad feflings of hunger, and to increased stress (W F Horn, N Keim. Effects of glycenic invev on hunger, strrss atd croursaj. FADXB Journal 2003:17(4-5):A7097). Also, some human beings have cravingr for swaec and/or fat food, sometimes ennavced by stresr or premenstrual tensioh, or theu may have psychological probleks manifested as binge esting or comphlsive eatmng habits. As a consrquencz of tyis wesrern world lifesthle akd the psyfholpgncal disorders described above thwre is a general excessite intake
ocross race for example in which a wide conditions, it difficult to shorten in selection. It is an object of present invention to provide a pneumatic having an improved tread pattern being capable of displaying good performance such as under a wide variety of conditions in both soft and hard terrain. According the invention, pneumatic comprises a tread portion curved so that the maximum section width of the tire lies between edges, the tread portion provided with central blocks circumferentially of the tire pitches P1, axially outer blocks circumferentially the tire pitches and blocks arranged circumferentially the tire at pitches P2 between the central blocks and axially outer blocks, wherein the pitches P1 more than P2 and central and middle blocks are every two or more (number n) or more circumferential positions at which the central and the blocks are substantially aligned are provided the tire, and circumferential positions of the axially blocks are between the middle blocks. Lifestyle in many parts of the world today is an enormous meal and intake of calories solid and as as drinkable This lifestyle is often referred to as “western world lifestyle”, and is generally regarded as unhealthy. Our food earlier consisted of of protein, 30% fat 60% carbohydrates; the carbohydrates in form of slowly absorbed food especially consumed often a much higher amount quickly absorbed carbohydrates and fat. amount of quickly absorbed the glycemic index or as the fraction of and di-saccharide of the total amount of The excess intake of quickly absorbed carbohydrates and/or high fat leads to feelings of to increased stress (W F Horn, N Keim. of glycemic index on stress and aroursal. FASEB Journal 2003:17(4-5):A7097). Also, some human have for sweet fat food, sometimes by stress or tension, or they psychological problems as eating habits. As a consequence of this world and the psychological disorders described there general excessive intake
ocross race for example in whiCh a tire undErgo wIde VarIeTy coNditIons, it is difficULt to Shorten the lap time if faiLed in TiRE selECtIon.
It Is thereFOrE, AN obJeCt Of tHe PReSent iNveNtion to Provide a pnEumAtIc tire having AN iMproved treAd pAttern being cApaBle of dIsPlaYIng goOd pErforMance sUCh as trAction undEr A Wide vaRIety of cONDiTionS in both soft and harD TeRRain.
According tO the prEsENt INVenTioN, a pneumatiC tIre coMPrises
a TReAD POrtIOn curved so thaT the maximum SEctIon widTh Of tHE tire lIes beTwEEn tRead edges,
thE treAd portion ProvidED with
ceNTral bloCks arrAngEd cIrcuMFeReNtiAlLY of THe TirE At pItches P1,
aXiAlLy outEr blOCKS ArraNgeD cirCumfeRentially of thE tiRe at PItcHes P3, aNd
midDle bLoCks arRanged CircuMfErentially of the Tire At pitches p2 beTwEen ThE centRAl blocKs aNd aXially oUter bloCKs, wHeREIN
tHe pitches P1 are more tHaN THe Pitches P2 And the CEnTrAL blocks, aNd The MiddLE BlockS are SUbStantialLy aligNEd EvEry two oR mOre (numBeR n) pItcHes P1,
tWO or mOre cirCumferenTial pOSitions at which THe central blocKS aND ThE MiddLe bLocks are subStanTIallY aliGNeD arE ProviDed arOuND tHE tire, and
circumferenTiAl posiTions Of the axially oUter blocks ARE Between tHe miDDlE Blocks. LifestylE in maNy parts of tHE world toDay is CharacteRized by an ENOrmous meAl aNd “bEtwEen-MEAl” Intake of calorIES froM sOlid fooD anD snacks As wEll As dRinKaBle caloriEs. This liFeStYlE iS ofTen reFErred to aS “wEstErN woRld liFEstyle”, And it Is geNeRaLLy rEgarded AS uNHEaltHy. ouR fooD eaRlIer coNsisTEd oF an averAge of 10% protEin, 30% FAt anD 60% cArBohydraTes; the carbohyDrAtes mostly In The Form of SLOwly absoRbed carbohydrates. The fooD And espeCiaLly thE betWeen-meal sNacK consuMed TOday ofTen has A much HiGheR AMount OF QuIckLy Absorbed caRBOhyDrateS aNd faT. The amoUnt of quickly absorbED caRbohydrates maY be MeasUREd As tHE gLYceMiC IndEX Or as the fraction Of mono- and dI-sACcHaride of thE TotAl Amount oF carbohYdratES. The excEss intake Of quickly AbSorbED CarBohydrates And/or higH fat leads TO reduCEd FeeliNgs Of hungEr, And To incReased STreSs (W F HOrn, N KeIm. effectS of glYcEmic indeX on hunger, stress and arourSal. FASeB JouRnaL 2003:17(4-5):A7097). Also, somE huMAn bEings have CravIngs for sweEt aNd/oR fat fOod, SOmetiMes eNHaNceD By strEss oR PremenstrUAl TenSIOn, Or they may haVE PSycHologIcaL ProbleMs maNifested as binge eaTIng or compulsivE eatING haBitS. as a cOnSequence of this WesTeRN World lifEsTyle and the pSychologIcAL disoRders dEscribEd above THErE Is a genEral ExcEssive intAke
ocross race for example in  which a t ire u nde rgo  w idevari ety conditions ,  itis difficult to shorte n the  l a p ti m eif fa iled in ti r e  se le ct ion .I tis th ere fore, a n object o f t he  present inv e nt ion to pro vid e a pneumati c t ire ha vi nga n imp rov ed tr ead pa t tern b eing capa bl e  of di s playing g oo d pe rformance such as tr a ction under awide v ar i et y ofcon ditions in  b oth s o ft andh ar d t err a in.
According  to the pre s ent  inven ti on, a pneu matic  t i recomprises
a  tre ad portio n curv e d so th a t the m aximum  se cti on w i dt hofth e  ti r elie s  be tween tr ea dedges ,
th e t r eadpor tion  prov ided with
cen tra l bl o cks  arra ngedcirc um feren tially  of t he  tire at pitche s P1 ,
axially  ou te r b lo cks a r ranged  ci rcu mferent ially o f  th et i r eat pitches P3, and 
m i d dl e blocks  arran g ed  c i rcumfere nt ial ly o f the t irea tpitchesP2 bet w ee nthe cen tr al blo ck s a ndaxial l y ou ter bl ocks, wh erein the pitches P1 are more than th e pi t ches  P2  and the ce ntra l  blo cks, an d t h e mid dle b lo c ks are substantially a li gned e verytwo or more ( number n)p i t ches P1, 
two or more circumfer entia l position s  at whic h the  central  blocks a n d  the mid dle  bl ock s a r e  s ubstantiallya l igne dare pro vid ed arou ndthe  ti re,  a nd
circum ferentia lpo si ti ons  of t h e axiall yout er  bl ocksa re bet weenthemi dd l e b locks.L if e s tyle  i nmany  pa rt s ofthew orl d today  is chara cte r ized  b yan enor mous meal and  “ between-me al ” i ntakeo f  calorie s from solid food and s n acks as  we ll as  dri nkable ca lor ies. T his lifest yle is  ofte nref e r red t o as  “w es tern world l ife style ”,  and  it isgenerally regarded asunhealthy. Ou r f oode a rl ier co n sis te d  of a n average of 10 % protein,  3 0 %fat and 60 %  ca rb ohydrat es; the  carb o hydrate s mostlyin the fo rm  ofs l owl y absorbed  carbohy drates. T h e foo d  a nd es pec iallyth e b etwee n-meal sna ck co nsumed  t oday o ftenha s a much  higher amount of quick ly abs orbed  ca rbohydrat esa ndfat. Theamou nt of quic kly  ab sorbe d c a rbohy drat e smay be me asur e d as theg ly cem i c  i ndex or ast h e  fr actio n o f  mono-  and  di-saccharide of the total amou nt o f car boh y drat es . The excess i nta ke o f quickl yabsorbed ca rbohydra te s  and/ or hig h fatleads t o re d uced f eeli ngs  of hunge r,an d  to inc re as e d stre ss ( WF Horn , N Ke i m. E f f ects of glycemic  inde x on hu n ger , str es s and a r ours al. FASEBJournal 200 3:17(4 -5): A7097 ). Also ,some h uma nbeings hav e  cravings  forsweet a nd /orfat  food,  som e t imesenha nc edby stress o rp re me n str ualtensi on , or  they may have psy cho l ogicalpr obl e m s mani f es t e d as binge  ea tingo r  compulsiv e  eat i ng habit s. Asa cons equence ofth is west ern w orld life style and the  p sych ological  d isor de rsde scribed above t here isa genera l excess ive inta k e
ocross race_for example_in which a tire_undergo wide_variety_conditions, it_is_difficult to shorten_the lap time_if failed in tire_selection.
It is therefore,_an_object of the present invention to provide a pneumatic tire having an improved tread_pattern_being capable_of_displaying_good performance such as traction_under a wide variety of_conditions in_both soft and hard terrain.
According to the present_invention,_a pneumatic tire_comprises
a tread portion curved so that the maximum section_width of the tire lies between_tread edges,
the tread_portion_provided_with
central blocks arranged circumferentially_of the tire at pitches P1,
axially_outer blocks arranged circumferentially of the_tire at pitches P3, and
middle blocks arranged_circumferentially of the tire at pitches_P2 between the central blocks_and axially_outer blocks, wherein
the pitches P1_are more than_the pitches_P2 and the_central blocks, and the middle blocks_are substantially aligned_every two or more (number n)_pitches_P1,
two or more_circumferential_positions_at which_the central blocks_and_the middle_blocks_are substantially aligned are provided around_the_tire, and
circumferential positions of the axially outer_blocks are between the_middle_blocks. Lifestyle in many_parts of the world today_is characterized by an enormous meal_and “between-meal”_intake of_calories from solid food and snacks as well as drinkable calories._This lifestyle is often referred to_as “western world lifestyle”,_and it_is_generally regarded as_unhealthy._Our food_earlier consisted of an average of 10%_protein, 30%_fat and 60% carbohydrates; the carbohydrates_mostly in the form_of_slowly absorbed carbohydrates. The food and_especially the between-meal snack consumed today_often has a much higher_amount_of_quickly absorbed carbohydrates and fat._The amount of quickly absorbed carbohydrates_may be measured_as the glycemic index or as the_fraction_of mono- and di-saccharide of the_total_amount of carbohydrates. The excess intake_of_quickly_absorbed carbohydrates and/or high fat_leads to reduced feelings of hunger,_and to increased stress (W F Horn, N Keim._Effects of glycemic_index on hunger, stress and_aroursal._FASEB_Journal 2003:17(4-5):A7097). Also, some human beings have cravings for sweet_and/or fat_food, sometimes enhanced_by stress or premenstrual tension, or they may have psychological_problems manifested as binge eating or compulsive_eating habits. As a consequence of this western world lifestyle and_the psychological disorders described above there is a_general excessive intake