tireheight.com295/30R21 in inches
A 295/30R21 tire is 28.0″ tall and 11.6″ wide, and fits a 21″ wheel. In inches it is written 28.0×11.6R21.
How tall 295/30R21 tires really are
Heights published by Michelin for all 8 tires in this size. Their published revolutions per mile work out to 27.1″ under load (below).
Real 295/30R21 tires measure 27.99–28.00″, against 27.97″ from the size code. Every one runs taller than the size code.
Published revs per mile (743) mean the tire rolls like a 27.1″ tire on the vehicle. Use this for speedometer calibration.
The lightest (Michelin Pilot Sport Cup 2 R, XL) is 3.4 lb lighter per corner than the heaviest (Michelin Pilot Alpin 5, XL).
8 tires in 295/30R21
Sort by the spec you care about.
| Load | Revs/mi | Source | |||||
|---|---|---|---|---|---|---|---|
| Michelin Pilot Sport Cup 2 RPerformance | XL · 102(Y) | 28.00 | 27.8 | 5.5 | 1,874 | 743 | Spec page |
| Michelin Pilot Sport S 5Performance | XL · 102(Y) | 28.00 | 27.9 | 9.0 | 1,874 | 743 | Spec page |
| Michelin Pilot Sport 4 SPerformance | XL · 102(Y) | 28.00 | 28.9 | 8.5 | 1,874 | 743 | Spec page |
| Michelin Pilot Sport 4 SPerformance | XL · 102(Y) | 28.00 | 28.9 | 8.5 | 1,874 | 743 | Spec page |
| Michelin Pilot Alpin 5Winter | XL · 102W | 27.99 | 29.5 | 9.5 | 1,874 | 743 | Spec page |
| Michelin Pilot Sport 4 SPerformance | XL · 102(Y) | 28.00 | 30.1 | 9.5 | 1,874 | 743 | Spec page |
| Michelin Pilot Sport EVPerformance | XL · 102Y | 28.00 | 30.1 | 8.5 | 1,874 | 743 | Spec page |
| Michelin Pilot Alpin 5Winter | XL · 102V | 27.99 | 31.2 | 9.5 | 1,874 | 743 | Spec page |
Is 295/30R21 a 28-inch tire?
Yes. The size code works out to 27.97″, and the 8 tires here publish 27.99–28.00″, so people call it a 28.
All 28-inch tire sizes, on every wheel size.
Compare with nearby sizes
Differences in overall diameter, calculated from each size code.
How to read 295/30R21
A percentage, not a measurement: the sidewall is 30% as tall as the tire is wide, which is 88.5 mm or 3.48 inches.
Radial construction.
Mounts on a 21-inch wheel. Approved wheel widths run 10.0″ to 11.0″.
Each tire carries up to 1,874 lb (850 kg) at its maximum pressure.
Rated for up to 186 mph sustained.
Printed after the size.
| Specification | Inches | Metric |
|---|---|---|
| Overall diameter | 27.97 | 710 mm |
| Section width | 11.61 | 295 mm |
| Sidewall height | 3.48 | 88.5 mm |
| Circumference | 87.9 | 2,232 mm |
| Revolutions per mile (calculated, unloaded) | 721.1 | 448 per km |
| Revolutions per mile (published by manufacturers) | 743 | 462 per km |
| Approved wheel width | 10.0–11.0 | 254–279 mm |
Speedometer error after switching to 295/30R21
Questions about 295/30R21
What is 295/30R21 in inches?
27.97 inches tall, 11.61 inches wide, on a 21-inch wheel. Written in inches, that is roughly 28.0×11.6R21.
How much does a 295/30R21 tire weigh?
Between 27.8 lb and 31.2 lb for the 8 tires listed here. The lightest is the Michelin Pilot Sport Cup 2 R (XL); the heaviest is the Michelin Pilot Alpin 5 (XL).
What wheel width do I need for 295/30R21?
Manufacturers approve 10.0–11.0″ wide wheels for this size.
How many revolutions per mile does a 295/30R21 make?
Published figures run 743 revolutions per mile. The calculated figure is 721.1, but manufacturers measure the tire under load, where it rolls on a smaller radius.
How much taller is 295/30R21 than 345/25R21?
0.18 inches taller on paper (27.97″ vs 27.79″), which raises the axle about 0.09″. Your speedometer will read about 0.6% slow.