1999 Chevrolet Camaro — SS Convertible
The 1999 Chevrolet Camaro SS Convertible came from the factory equipped with 275/40R17 tires. If your vehicle has since been fitted with aftermarket or upsized wheels, your actual tire size may no longer match this factory spec — always confirm against your door placard before buying.
275/40R17
| Section width | 275 mm |
|---|---|
| Aspect ratio (sidewall height) | 40% (110 mm) |
| Rim diameter | 17" |
| Overall tire diameter | ~25.7" |
| Revolutions per mile | ~786 |
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What this size means for your Chevrolet Camaro
On the 1999 Chevrolet Camaro SS Convertible, the factory 275/40R17 measures about 25.7″ in overall diameter with a 110 mm (4.3″) sidewall, and completes roughly 786 revolutions per mile. Its 40-series aspect ratio gives a low-profile sidewall tuned for sharper handling, common on sport trims and larger-wheel packages. In tire terms it is a passenger (P-metric / Euro-metric) size.
On a vehicle of this age, the Chevrolet Camaro may have been refitted with a slightly different replacement size somewhere in its life, so check the current sidewall — not just the factory spec — before buying.
Other 1999 Chevrolet Camaro trims
- Base Model 215/60R16 / 235/55R16
- Convertible 215/60R16 / 235/55R16
- SS 275/40R17
- Z28 235/55R16 / 245/50R16
- Z28 Convertible 235/55R16 / 245/50R16
Chevrolet Camaro tire sizes by year
- 2024 Chevrolet Camaro 245/50R18
- 2023 Chevrolet Camaro 245/50R18
- 2022 Chevrolet Camaro 245/50R18
- 2021 Chevrolet Camaro 245/50R18
- 2020 Chevrolet Camaro 245/50R18
- 2019 Chevrolet Camaro 245/50R18
- 2018 Chevrolet Camaro 245/50R18 / 245/40R20
- 2017 Chevrolet Camaro 245/50R18 / 245/40R20
- 2016 Chevrolet Camaro 245/50R18 / 245/40R20
- 2015 Chevrolet Camaro 245/55R18 / 245/40R21 (Front) / 275/35R21 (Rear)
How to read a tire size
A tire size like 225/45R17 breaks down into three parts:
the first number is the section width in millimeters
(the tire's width from sidewall to sidewall), the second is the
aspect ratio — the sidewall's height as a percentage of
that width — and the number after the "R" is the rim
diameter in inches. A letter prefix (P or LT) indicates
Passenger or Light Truck construction; its absence usually means
Euro-metric sizing.
Some trucks and off-road tires instead use "flotation" sizing, like
37X12.50R17 — here the numbers are the tire's overall
diameter and width in inches directly, with the rim diameter last.
Always verify against the tire information placard on your driver's-side door jamb or your owner's manual before purchasing — tire size can vary by factory option package even within the same trim.