Consum Er Inform Ation - Mercedes-Benz 190D 2.2 1984 Owner's Manual

Consum er Inform ation

This has been prepared as required
o f all m a n u fa ctu re rs o f passenger
cars under T itle 49, C ode o f U. S.
Federal R egulations, Part 575 p u r­
suant to the " N ational T ra ffic and
M o to r V ehicle Safety A ct o f 1966".
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88
Uniform Tire Quality Grading
Relevant tire grade in fo rm a tio n on
tire flanks.
All passenger car tire s m ust c o n ­
fo rm to federal safety re quirem e nts
in a d d itio n to these grades.
T ra ctio n " A " , " B " , " C "
The tra c tio n grades, fro m h igh est to
low est, are " A " , " B " and " C " and
the y represent the tire 's a b ility to
stop on w e t pavem ent as m easured
un d e r c o n tro lle d c o n d itio n s on
s p e cifie d g o ve rn m en t test surfaces
o f a sp halt and con cre te. A tire
m arked " C " may have p o o r tra c tio n
p erform ance.
W a rn in g : The tra c tio n grade as­
signed to th is tire is based on b rak­
ing (straightahead) tra c tio n tests
and does n o t in c lu d e c o rn e rin g
(tu rn in g ) tra c tio n .
T e m p era ture " A " , " B ", " C "
The te m p e ra tu re grades of " A " (the
highest). " B " and " C " representing
the tire 's resistance to the genera­
tio n o f heat and its a b ility to d issi­
pate heat w hen tested und e r c o n ­
tro lle d c o n d itio n s on a s p e cifie d in ­
d o o r la b o ra to ry test w heel. Sus­
tained high te m p era ture can cause
the m aterial o f the tire to de gene r­
ate and reduce tire life, and exces­
sive tem p e ra tu re can lead to su d ­
den tire fa ilure . The grade " C " c o r­
respon d s to a level o f perfo rm a nce
w h ic h all passenger car tires m ust
m eet u n d e r the Federal M o to r V ehi­
cle S afety S tandard No. 109. Grades
" B " and " A " re present h ig h er levels
o f p e rfo rm a n ce on the labo rato ry
test w heel than the m inim um re­
q u ire d by law. W arn in g : The te m ­
perature g rade fo r th is tire is estab­
lished fo r a tire th a t is p ro p e rly in ­
fla te d and n o t ove rlo a d ed. Exces­
sive speed, u n d e rin fla tio n , o r exces­
sive lo ading, e ith e r separately o r in
c o m b in a tio n , can cause heat b u ild ­
up and possible tire fa ilu re.