Chevrolet Corvette Owner Manual (GMNA-Localizing-Europe-15352645) -
2022 - CRC - 6/22/21
274
Vehicle Care
Tread wear indicators are one way to tell
when it is time for new tyres. Tread wear
indicators appear when the tyres have only
1.6 mm (1/16 in) or less of tread remaining.
See
and
for additional
information.
The rubber in tyres ages over time. This also
applies to the spare tyre, if the vehicle has
one, even if it is never used. Multiple factors
including temperatures, loading conditions,
and inflation pressure maintenance affect
how fast ageing takes place. GM
recommends that tyres, including the spare
if equipped, be replaced after six years,
regardless of tread wear. To identify the age
of a tyre, use the tyre manufacture date,
which consists of the last four digits of the
DOT Tyre Identification Number (TIN)
moulded into one side of the tyre sidewall.
The last four digits of the TIN indicate the
tyre manufacture date. The first two digits
indicate the week and the last two digits,
the year. For example, the third week of the
year 2020 would have a 4-digit DOT date of
0320. Week 01 is the first full week (Sunday
to Saturday inclusive) of each year.
Vehicle Storage
Tyres age when stored normally mounted
on a parked vehicle. Park a vehicle that will
be stored for at least a month in a cool, dry,
clean area away from direct sunlight to slow
ageing. This area should be free of grease,
petrol, or other substances that can
deteriorate rubber.
Parking for an extended period can cause
flat spots on the tyres that may result in
vibrations while driving. When storing a
vehicle for at least a month, remove the
tyres or raise the vehicle to reduce the
weight from the tyres.
Buying New Tyres
GM has developed and matched specific
tyres for the vehicle. The original
equipment tyres installed were
designed to meet General Motors Tyre
Performance Criteria Specification (TPC
Spec) system rating. When replacement
tyres are needed, GM strongly
recommends buying tyres with the
same TPC Spec rating.
GM's exclusive TPC Spec system
considers over a dozen critical
specifications that impact the overall
performance of the vehicle, including
brake system performance, ride and
handling, traction control, and tyre
pressure monitoring performance. GM's
TPC Spec number is moulded onto the
tyre's sidewall near the tyre size. If the
tyres have an all-season tread design,
the TPC Spec number will be followed
by MS for mud and snow.
GM recommends replacing worn tyres
in complete sets of four. Uniform tread
depth on all tyres will help to maintain
the performance of the vehicle. Braking
