A 235/35R20 tire is 26.5″ tall and 9.3″ wide, and fits a 20″ wheel. In inches it is written 26.5×9.3R20.
Heights published by BFGoodrich, Michelin and Toyo for all 8 tires in this size. Their published revolutions per mile work out to 25.7″ under load (below).
Real 235/35R20 tires measure 26.46–26.60″, against 26.48″ from the size code. Most run taller than the size code (6 of 8).
Published revs per mile (785–786) mean the tire rolls like a 25.7″ tire on the vehicle. Use this for speedometer calibration.
The lightest (Michelin Pilot Sport Cup 2 Connect, XL) is 2.4 lb lighter per corner than the heaviest (BFGoodrich g-Force Phenom T/A, XL).
Sort by the spec you care about.
| Load | Revs/mi | Source | |||||
|---|---|---|---|---|---|---|---|
| Michelin Pilot Sport Cup 2 ConnectPerformance | XL · 92(Y) | 26.50 | 22.8 | 7.2 | 1,389 | 786 | Spec page |
| Michelin Pilot Alpin PA4Winter | XL · 92V | 26.46 | 23.0 | 10.5 | 1,389 | 786 | Spec page |
| Michelin Pilot Sport 4 SPerformance | XL · 92(Y) | 26.50 | 23.1 | 9.5 | 1,389 | 786 | Spec page |
| Toyo Proxes Sport 2Performance | XL · 92(Y) | 26.50 | 23.1 | 8.9 | 1,389 | 785 | Spec page |
| Michelin Pilot Sport 4 SPerformance | XL · 92(Y) | 26.50 | 23.3 | 9.5 | 1,389 | 786 | Spec page |
| Michelin Pilot Sport 4 SPerformance | XL · 92Y | 26.50 | 24.6 | 9.0 | 1,389 | 786 | Spec page |
| Michelin Pilot Sport All-Season 4Performance | XL · 92Y | 26.60 | 24.7 | 10.0 | 1,389 | 786 | Spec page |
| BFGoodrich g-Force Phenom T/APerformance | XL · 92Y | 26.46 | 25.2 | 9.0 | 1,389 | 786 | Spec page |
Close. The size code works out to 26.48″, and the 8 tires here publish 26.46–26.60″, so people call it a 27.
All 27-inch tire sizes, on every wheel size.
Differences in overall diameter, calculated from each size code.
A percentage, not a measurement: the sidewall is 35% as tall as the tire is wide, which is 82.3 mm or 3.24 inches.
Radial construction.
Mounts on a 20-inch wheel. Approved wheel widths run 8.0″ to 9.5″.
Each tire carries up to 1,389 lb (630 kg) at its maximum pressure.
Rated for up to 186 mph sustained.
Printed after the size.
| Specification | Inches | Metric |
|---|---|---|
| Overall diameter | 26.48 | 672 mm |
| Section width | 9.25 | 235 mm |
| Sidewall height | 3.24 | 82.3 mm |
| Circumference | 83.2 | 2,113 mm |
| Revolutions per mile (calculated, unloaded) | 761.7 | 473 per km |
| Revolutions per mile (published by manufacturers) | 785–786 | 488 per km |
| Approved wheel width | 8.0–9.5 | 203–241 mm |
26.48 inches tall, 9.25 inches wide, on a 20-inch wheel. Written in inches, that is roughly 26.5×9.3R20.
Between 22.8 lb and 25.2 lb for the 8 tires listed here. The lightest is the Michelin Pilot Sport Cup 2 Connect (XL); the heaviest is the BFGoodrich g-Force Phenom T/A (XL).
Manufacturers approve 8.0–9.5″ wide wheels for this size.
Published figures run 785–786 revolutions per mile. The calculated figure is 761.7, but manufacturers measure the tire under load, where it rolls on a smaller radius.
0.08 inches taller on paper (26.48″ vs 26.40″), which raises the axle about 0.04″. Your speedometer will read about 0.3% slow.