P 255/40 R21 tires






Tire Specs
Overall Diameter | P 255/40 R21 is 29.03 in inches |
Section Width | 255 mm |
Rim Diameter | 21" |
Rim Width Range - What size rim fits a P 255/40 R21? | 21x8.5, 21x9.0, 21x9.5 |
Sidewall Height | 4.02" |
Circumference | 91.2 " |
Revs per Mile | 694.74/mi |
P 255/40 R21 tire size Fits What Cars?
Explore the collection of vehicles riding on P 255/40 R21 tire size which turns them into competitors to some extent.
The list of cars below is compiled assuming P 255/40 R21 is their factory tire size.
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Audi tire size
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Chrysler tire size
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Dodge tire size
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Land Rover tire size
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Rolls-Royce tire size
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Volvo tire size
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Mercedes-Benz tire size
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BMW tire size
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Genesis tire size
Upsizing Wheels or Tires?
We also suggest going over the similar tire sizes that have slightly different parameters but still might be even a better fit for your vehicle with many of the combinations already applied by car enthusiasts.
Below is the list of all possible alternatives to P 255/40 R21 within delta of no more than three percent which means you can shift to wider wheels with smaller aspect ratio and vice versa. Wheel experts do not recommend to decrease the diameter of the wheel. So if you are not sure what other tire sizes would match your ride simply stick to the factory wheels.
P 305/30 R21 | -2.84% |
P 265/35 R21 | -2.50% |
P 315/30 R21 | -2.03% |
P 325/30 R21 | -1.22% |
P 245/40 R21 | -1.08% |
P 265/40 R21 | +1.08% |
P 195/55 R21 | +1.41% |
P 275/40 R21 | +2.13% |
P 245/45 R21 | +2.19% |
P 205/55 R21 | +2.84% |
Comparisons
255/50 R19 vs 255/40 R21 |
Modified cars that use P 255/40 R21 tire size
We keep an updated collection of cars that gave up factory wheels and installed P 255/40 R21 instead as their aftermarket tire size. Each project is a unique experience with details on P 255/40 R21 installation issues or subsequent changes while driving.
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2014 Audi Q5
- ADV.1 6 MV2 21x9.0 , 21x9.5
- P 255/40 R21
- 5425 views
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2014 Audi Q5
- Avant Garde M510 21x9.0 +25
- P 255/40 R21
- 1996 views
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2019 Audi SQ5
- SQ5 21-inch
- P 255/40 R21
- 92 views
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2016 Audi Q5
- 21x9.5 +31
- P 255/40 R21
- 84 views
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2016 Audi SQ5
- 21x9.0 +21, 21x10.5 +15
- P 255/40 R21, rear P 295/35 R21
- 82 views
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2016 Audi SQ5
- 21-inch
- P 255/40 R21
- 57 views
Discussion