2003 Oldsmobile Alero — GX Coupe
The 2003 Oldsmobile Alero GX Coupe came from the factory equipped with 215/60R15 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.
215/60R15
| Section width | 215 mm |
|---|---|
| Aspect ratio (sidewall height) | 60% (129 mm) |
| Rim diameter | 15" |
| Overall tire diameter | ~25.2" |
| Revolutions per mile | ~802 |
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What this size means for your Oldsmobile Alero
On the 2003 Oldsmobile Alero GX Coupe, the factory 215/60R15 measures about 25.2″ in overall diameter with a 129 mm (5.1″) sidewall, and completes roughly 802 revolutions per mile. Its 60-series aspect ratio gives a taller, comfort-biased sidewall that favors ride quality and shrugs off rough pavement. In tire terms it is a passenger (P-metric / Euro-metric) size.
On a vehicle of this age, the Oldsmobile Alero 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 2003 Oldsmobile Alero trims
Oldsmobile Alero tire sizes by year
- 2004 Oldsmobile Alero 215/60R15 / 225/50R16
- 2002 Oldsmobile Alero 215/60R15 / 225/50R16
- 2001 Oldsmobile Alero 215/60R15 / 225/50R16
- 2000 Oldsmobile Alero 215/60R15 / 225/50R16
- 1999 Oldsmobile Alero 215/60R15 / 225/50R16
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.