Tyre tools
Size calculator, pressure lookup, load and speed tables, and the DOT age check.
7 tools
- Tyre size decoder
Type a size such as 205/55 R16 91V and read every part of it: width, profile, rim, load and speed.
- Tyre size comparison
Set an alternative size against the original and see the diameter change, speedometer error and the 3% rule.
- Tyre pressure for your car
Recommended front and rear pressures for Indian cars, from the maker’s own figures.
- Tyres by car model
Pick a make and model to see the sizes fitted by variant, the pressures and the price bands.
- PSI to bar and kPa converter
Convert tyre pressure between psi, bar and kPa, with the common car settings.
- Load index and speed rating chart
The full tables: what each load number carries in kilograms and what each speed letter allows.
- Tyre age from the DOT code
Find the week and year a tyre was made and when it is due for replacement.
Every tool is free to use and works on a phone. The car and size figures they read are the same ones printed on our car and size pages, with the date each was checked.