1985 Saab 900 — S
The 1985 Saab 900 S came from the factory equipped with 185/65R15 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.
185/65R15
| Section width | 185 mm |
|---|---|
| Aspect ratio (sidewall height) | 65% (120.3 mm) |
| Rim diameter | 15" |
| Overall tire diameter | ~24.5" |
| Revolutions per mile | ~824 |
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What this size means for your Saab 900
On the 1985 Saab 900 S, the factory 185/65R15 measures about 24.5″ in overall diameter with a 120.3 mm (4.7″) sidewall, and completes roughly 824 revolutions per mile. Its 65-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.
Because the 1985 Saab 900 predates many current tire lines, confirm this size is still stocked before ordering — some vintage fitments are now served mainly by specialty and classic-car tire suppliers.
Other 1985 Saab 900 trims
- Base Model 185/65R15
- SPG 195/60R15
- Turbo 185/65R15 / 195/60R15
Saab 900 tire sizes by year
- 1998 Saab 900 195/60R15
- 1997 Saab 900 195/60R15
- 1996 Saab 900 195/60R15
- 1995 Saab 900 195/60R15
- 1994 Saab 900 195/60R15
- 1993 Saab 900 185/65R15
- 1992 Saab 900 185/65R15
- 1991 Saab 900 185/65R15
- 1990 Saab 900 185/65R15
- 1989 Saab 900 185/65R15
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.