1999 BMW 528i — Wagon
The 1999 BMW 528i Wagon shipped with 2 different factory tire sizes, depending on the wheel package it left the factory with (this can also reflect a staggered front/rear setup). Check your tire sidewall or door placard to confirm which one applies to your vehicle.
This trim shipped with more than one tire size (staggered fitment, front/rear, or optional wheel package). Confirm which one matches your vehicle by checking your tire sidewall or door placard.
225/60R15
| Section width | 225 mm |
|---|---|
| Aspect ratio (sidewall height) | 60% (135 mm) |
| Rim diameter | 15" |
| Overall tire diameter | ~25.6" |
| Revolutions per mile | ~787 |
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225/55R16
| Section width | 225 mm |
|---|---|
| Aspect ratio (sidewall height) | 55% (123.8 mm) |
| Rim diameter | 16" |
| Overall tire diameter | ~25.7" |
| Revolutions per mile | ~783 |
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What this size means for your BMW 528i
On the 1999 BMW 528i Wagon, the factory 225/60R15 measures about 25.6″ in overall diameter with a 135 mm (5.3″) sidewall, and completes roughly 787 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.
The 225/60R15 and 225/55R16 roll within 0.1″ (0.4%) of each other in overall diameter, so they are interchangeable from a speedometer standpoint — the second size is an optional wheel package rather than a different rolling size.
On a vehicle of this age, the BMW 528i 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 BMW 528i trims
- Base Model 225/60R15 / 225/55R16
- Sport Package 235/45R17
- Wagon Sport Package 235/45R17
BMW 528i tire sizes by year
- 2016 BMW 528i 225/55R17 / 245/45R18
- 2015 BMW 528i 225/55R17
- 2014 BMW 528i 225/55R17
- 2013 BMW 528i 225/55R17
- 2012 BMW 528i 225/55R17
- 2011 BMW 528i 225/55R17
- 2010 BMW 528i 225/50R17 / 245/40R18
- 2009 BMW 528i 225/50R17 / 245/40R18
- 2008 BMW 528i 225/50R17 / 245/40R18
- 2000 BMW 528i 225/60R15 / 225/55R16
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.