2015 BMW 740Li — Base Model
The 2015 BMW 740Li Base Model shipped with 7 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.
245/50R18
| Section width | 245 mm |
|---|---|
| Aspect ratio (sidewall height) | 50% (122.5 mm) |
| Rim diameter | 18" |
| Overall tire diameter | ~27.6" |
| Revolutions per mile | ~730 |
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245/45R19 (Front)
| Section width | 245 mm |
|---|---|
| Aspect ratio (sidewall height) | 45% (110.3 mm) |
| Rim diameter | 19" |
| Overall tire diameter | ~27.7" |
| Revolutions per mile | ~729 |
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275/40R19 (Rear)
| Section width | 275 mm |
|---|---|
| Aspect ratio (sidewall height) | 40% (110 mm) |
| Rim diameter | 19" |
| Overall tire diameter | ~27.7" |
| Revolutions per mile | ~729 |
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245/40R20 (Front)
| Section width | 245 mm |
|---|---|
| Aspect ratio (sidewall height) | 40% (98 mm) |
| Rim diameter | 20" |
| Overall tire diameter | ~27.7" |
| Revolutions per mile | ~728 |
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275/35R20 (Rear)
| Section width | 275 mm |
|---|---|
| Aspect ratio (sidewall height) | 35% (96.3 mm) |
| Rim diameter | 20" |
| Overall tire diameter | ~27.6" |
| Revolutions per mile | ~731 |
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245/35R21 (Front)
| Section width | 245 mm |
|---|---|
| Aspect ratio (sidewall height) | 35% (85.8 mm) |
| Rim diameter | 21" |
| Overall tire diameter | ~27.8" |
| Revolutions per mile | ~727 |
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275/30R21 (Rear)
| Section width | 275 mm |
|---|---|
| Aspect ratio (sidewall height) | 30% (82.5 mm) |
| Rim diameter | 21" |
| Overall tire diameter | ~27.5" |
| Revolutions per mile | ~733 |
Compare prices at:
What this size means for your BMW 740Li
On the 2015 BMW 740Li Base Model, the factory 245/50R18 measures about 27.6″ in overall diameter with a 122.5 mm (4.8″) sidewall, and completes roughly 730 revolutions per mile. Its 50-series aspect ratio gives a balanced everyday-passenger profile — enough sidewall to soak up road shock while keeping steering response crisp. In tire terms it is a passenger (P-metric / Euro-metric) size.
The 245/50R18 and 245/45R19 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.
Other 2015 BMW 740Li trims
- xDrive 245/50R18 / 245/45R19 (Front) / 275/40R19 (Rear) / 245/40R20 (Front) / 275/35R20 (Rear) / 245/35R21 (Front) / 275/30R21 (Rear)
BMW 740Li tire sizes by year
- 2014 BMW 740Li 245/50R18 / 245/45R19 (Front) / 275/40R19 (Rear) / 245/40R20 (Front) / 275/35R20 (Rear) / 245/35R21 (Front) / 275/30R21 (Rear)
- 2013 BMW 740Li 245/50R18 / 245/45R19 (Front) / 275/40R19 (Rear) / 245/40R20 (Front) / 275/35R20 (Rear) / 245/35R21 (Front) / 275/30R21 (Rear)
- 2012 BMW 740Li 245/50R18 / 245/45R19 (Front) / 275/40R19 (Rear) / 245/40R20 (Front) / 275/35R20 (Rear) / 245/35R21 (Front) / 275/30R21 (Rear)
- 2011 BMW 740Li 245/50R18 / 245/45R19 (Front) / 275/40R19 (Rear) / 245/40R20 (Front) / 275/35R20 (Rear) / 245/35R21 (Front) / 275/30R21 (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.