MCCORMICK X60 Series - Tyre Pressures, Load Capacities and Service

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Tyres, Wheels, Ballasting
TYRE PRESSURES, LOAD CAPACITIES AND SERVICE
Tyrescanbemarkedintwoways,asshownintheexamplesbelow:
CROSSPLY STRUCTURE: Example
12.4-24 8PR
12.4=Nominaltyrewidthininches
-= Crossplystructure
24= Internaldiameter
8PR= 8plyrating
Forcorrecttyrepressures/loadcapacitiesforCROSSPLYtyresseeyourdealerortyremanufacturer.
RADIAL - Examples
18.4R38
18.4=Nominaltyrewidthininches
R=Radialstructure
38= Internaldiameter
142=Loadindexnumber,142=2650kg(seechart1)
A8=Speedcodefor40kph,(seechart2)
710/75R34
710=Nominaltyrewidthinmm
75= Nominalaspectratio (ratio of sidewall
height/sectionwidth)
R=Radialstructure
34=Rimdiameteratthebeadseatininches
168=Loadindexnumber,168=5,600kg(seechart1)
A8=Speedcodefor40kph,(seechart2)
165=Loadindexnumber,165=5,150kg(seechart1)
B=Speedcodefor50kph,(seechart2)
TheperformanceofaRadialtyreisdeterminedbytheLoadIndexandSpeedCodewhichhavereplacedthePlyrating
foundonCrossplytyres.
ThemaximumloadwhichcanbecarriedbyatyreisdependantupontheLoadIndexquotedonthetyrewall.Charts1
and2,onthefollowingpage,giveaguidetothemaximumloadatyrecancarryandapercentage(%)variationdepend-
inguponthespeedcodeortravelspeed.