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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  1. Zero 15x8 4x100 ET10 Gloss Black with Polished Face
    Excl. VAT: £141.67 Incl. VAT: £170.00
    Serious fitment wheels for the following vehicles - Arch work may be needed! Honda Civic Mazda MX5 Mk1 (NA) Mazda MX5 Mk2 (NB) Mazda MX5 Mk2.5 (NB) Suzuki Swift Toyota Starlet Vauxhall Corsa Learn More
  2. Torque 17x8 4x100 ET35 White
    Excl. VAT: £158.33 Incl. VAT: £190.00
    Torque,17,8,4100,ET35,White Learn More
  3. Torque 17x8 4x100 ET35 Gunmetal
    Excl. VAT: £158.33 Incl. VAT: £190.00
    Torque,17,8,4100,ET35,Gunmetal Learn More
  4. TBT 15x8 4x100 ET0 Flat Gunmetal
    Excl. VAT: £141.67 Incl. VAT: £170.00
    Serious fitment wheels for the following vehicles - Arch work may be needed! Honda Civic Mazda MX5 Mk1 (NA) Mazda MX5 Mk2 (NB) Mazda MX5 Mk2.5 (NB) Suzuki Swift Toyota Starlet Vauxhall Corsa Learn More
  5. Strike 15x8 4x100 ET20 Flat Black 2
    Excl. VAT: £141.67 Incl. VAT: £170.00
    A very popular choice for the following vehicles: Honda Civic Mazda MX5 Mk1 (NA) Mazda MX5 Mk2 (NB) Mazda MX5 Mk2.5 (NB) Toyota Starlet Vauxhall Corsa Volkswagen Polo Volkswagen Golf Learn More
  6. Sprint 18x8.0 4x100 ET40 White
    Excl. VAT: £191.66 Incl. VAT: £229.99
    Sprint 18x8.0 4x100 ET40 White Learn More
  7. Sprint 18x8.0 4x100 ET40 Silver
    Excl. VAT: £191.66 Incl. VAT: £229.99
    Sprint 18x8.0 4x100 ET40 Silver Learn More
  8. Sprint 18x8.0 4x100 ET40 Gunmetal
    Excl. VAT: £191.66 Incl. VAT: £229.99
    Sprint 18x8.0 4x100 ET40 Gunmetal Learn More
  9. Sprint 18x8.0 4x100 ET40 Black
    Excl. VAT: £191.66 Incl. VAT: £229.99
    Sprint 18x8.0 4x100 ET40 Black Learn More
  10. Slip 16x8 4x100 ET34 White
    Excl. VAT: £154.17 Incl. VAT: £185.00
    Slip,16,8,4100,ET34,White Learn More

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