Welcome to Rota Wheels UK - the home of Rota Wheels in Europe

Tyre Size Calculator

Enter your existing wheel and tyre specification in 'Existing Setup' then enter the specification of your potentially new wheels and tyres to see what a difference it will make!

This tool is great for working out if your new wheels will give you more or less clearance to your suspension and wheel arches. If you have any questions or need help using it please do get in touch and we'll be happy to help you with it.

Existing setup

New setup

Tyre diagram

The image to the left shows your 'Existing' wheel and tyre (grey + black) with the 'New Setup' (green + black) overlaid.

This is a graphical representation of how your chosen change in wheel and tyre will affect your stance, poke and clearance.

To see the wheel to tyre ratio changes, and the Existing vs New tyres in profile select 'Tyre Image'.

For the measurements, take a look in the 'Data Table' tab.

Tyre image
Data table
ExistingNew
Tyre Diameter631.9mm625.3mm
Tyre Circumference1985.2mm1964.4mm
Additional PokeN/A
Inboard ClearanceN/A
Gearing ChangeN/A1.01%
Speedo at 30mph30mph
Speedo at 60mph60mph
Ride Height ChangeN/A
Arch Gap ChangeN/A

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6 Item(s)

  1. Formula B 18x8.5 5x100 ET44 Gunmetal
    Excl. VAT: £212.50 Incl. VAT: £255.00
    Formula B 18x8.5 5x100 ET44 Gunmetal Learn More
  2. Formula B 18x8.5 5x114.3 ET44 Gunmetal
    Excl. VAT: £212.50 Incl. VAT: £255.00
    Formula B 18x8.5 5x114.3 ET44 Gunmetal Learn More
  3. Grid Van 18x8.5 5x112 ET45 Gunmetal
    Excl. VAT: £180.83 Incl. VAT: £217.00
    Grid Van 18x8.5 5x112 ET45 Gunmetal. This is a speciality wheel to cater for the ever popular commercial vehicle sector. With a load rating of 955kg these can be safely fitted to many vans, campers and other vehicles requiring a larger load rating than that specified on most alloy wheels for cars and lighter car derived vans. Keeping the same distinctive look of the other wheels in the Rota Grid range, these are sure to look amazing when fitted. Available in common commercial vehicle PCDs and in a number of attractive colours. Learn More
  4. Grid Van 18x8.5 5x118 ET45 Gunmetal
    Excl. VAT: £180.83 Incl. VAT: £217.00
    Grid Van 18x8.5 5x118 ET45 Gunmetal. This is a speciality wheel to cater for the ever popular commercial vehicle sector. With a load rating of 955kg these can be safely fitted to many vans, campers and other vehicles requiring a larger load rating than that specified on most alloy wheels for cars and lighter car derived vans. Keeping the same distinctive look of the other wheels in the Rota Grid range, these are sure to look amazing when fitted. Available in common commercial vehicle PCDs and in a number of attractive colours. Learn More
  5. Titan 18x9 5x112 ET42 Gunmetal
    Excl. VAT: £216.67 Incl. VAT: £260.00
    Titan,18x9,5x112,E42,Gunmetal Learn More
  6. Titan 17x7.5 4x100 ET35 Gunmetal
    Excl. VAT: £145.83 Incl. VAT: £175.00
    A hugely popular wheel for the following vehicles: Mini R53 Mini R56 Learn More

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6 Item(s)