2008 BMW 650i — Coupe Sport Package

The 2008 BMW 650i Coupe Sport Package 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.

245/40R19 (Front)

Section width245 mm
Aspect ratio (sidewall height)40% (98 mm)
Rim diameter19"
Overall tire diameter~26.7"
Revolutions per mile~755

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275/35R19 (Rear)

Section width275 mm
Aspect ratio (sidewall height)35% (96.3 mm)
Rim diameter19"
Overall tire diameter~26.6"
Revolutions per mile~759

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What this size means for your BMW 650i

On the 2008 BMW 650i Coupe Sport Package, the factory 245/40R19 measures about 26.7″ in overall diameter with a 98 mm (3.9″) sidewall, and completes roughly 755 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.

This is a staggered setup: the front axle runs 245/40R19 and the rear runs 275/35R19. The two sizes are not interchangeable, so order each for its correct axle and don't rotate front-to-rear.

On a vehicle of this age, the BMW 650i 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 2008 BMW 650i trims

BMW 650i tire sizes by year

See every BMW 650i year & trim →

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.