Booklet 3.2 Tips and Advice
bers or w her e il manufactured, and fo ur numb ers re pre
s ent the week and year of manufa ctur e. For ex
ampl e, th e numb ers 180 1 m ean lhal
lir e produ ced in the wee k of 200 1. oth er
numb ers arc m ark e ting code s may or may
n ot b e use d by th e lir e m an ufa c tur er. T hi s info r
is use d lO cl co nsum ers if lir e dere quir es reca ll.
Vehicle capacity we ight
means cargo and luggage load pl us
1 50 lbs. (68 kilogra ms) lime s vehicle's I se
alin g capaci ty as
on label alt ached lo
t h e open ed ge of th e dri ver's door .
Vehicle maximum load on the tire
means that load on an ind iv idua l tire that is de
t erm in ed b y dis tribu ting e a ch ax le its shar e of ma ximum load ed ve hicle weig ht and di
v iding b y
Vehicle nor mal load on the tire
mean s load on an indi vidual lha l is de
termined by each axle i ls s hare of curb accessory and n ormal weighl in accordan ce below 54) and div id in g by
Occupant loading and distribution for vehic le normal load for various designated sealing capaciti es
Desig na ted sea ling capaci ty,
Vehicle norm al l oad, numbe r
Occupa nt distri bution in a
nu mber of occ upants
of occupants normally lo aded vehicle
2 th rough 4
2 2 in front.
5 3 in I in back scat.
Cold tire inflation pressure
pressure aff ects the overall safety of a icle .
TIRE AND LOADING INFORMATION
( SEATING CAPAOTY
amt,l D Of
TIR E SIZE COLD TIRE PRESSURE
FRONT
SPARE
F ig . 1 3 Approximate location of fire pressure labe l on open edge of driver's door and example
of a fire pressure label
T ire p ress ur e ge nera lly refe rs to in a tire th at i l needs il t o do ils job an d sa fe ly
ca rry co mbin ed loa d of enti re vehicle
and it s content s. Tir e pre ssur e is meas ured in ki
l op ascals
imernat io nal meas urin g
unit and in poun ds per squar e in ch (P SI). Tir e
p ressure is based in pan o n th e ve hicle's des ig n
and l oad Ii mil -
greates t amount of
54 Checking and Filling
th at can car ry safe ly an d th e lir e s ize.
T he proper tir e press ure is frequ entl y to
as the "recom mend ed co ld tire inflation pr es
s ur e." Air in
!ires expa nds w hen tir e heat s
up because of fric tion when it fl exes in
u se . Th e tir e press ure is highe r w hen tire warmed up than when is "co ld.·· ll i s infla
t io n p ressure in a "co ld" lire Ther e-
