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. Slip 18x8.5 5x120 ET30 Flat Black 2
    Excl. VAT: £212.50 Incl. VAT: £255.00
    Slip,18,8.5,5120,ET30,Flat Black 2 Learn More
  2. Slip 18x8.5 5x108 ET42 Flat Black 2
    Excl. VAT: £212.50 Incl. VAT: £255.00
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  3. Slip 18x10.5 5x120 ET22 Flat Black
    Excl. VAT: £245.83 Incl. VAT: £295.00
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  4. Slip 17x8 5x114 ET48 Flat Black 2
    Excl. VAT: £158.33 Incl. VAT: £190.00
    Slip,17,8,5114,ET48,Flat Black 2 Learn More
  5. Slip 17x7.5 4x100 ET45 Flat Black 2
    Excl. VAT: £150.00 Incl. VAT: £180.00
    Slip,17,7.5,4100,ET45,Flat Black 2 Learn More
  6. Slip 16x8 4x100 ET34 Flat Black 2
    Excl. VAT: £154.17 Incl. VAT: £185.00
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  7. Slip 16x7 5x114 ET40 Flat Black 2
    Excl. VAT: £139.17 Incl. VAT: £167.00
    Slip,16,7,5114,ET40,Flat Black 2 Learn More
  8. Slip 16x7 4x100 ET40 Flat Black 2
    Excl. VAT: £139.17 Incl. VAT: £167.00
    Slip,16,7,4100,ET40,Flat Black 2 Learn More
  9. Slip 15x8 4x108 ET25 Flat Black 2
    Excl. VAT: £141.67 Incl. VAT: £170.00
    Slip,15,8,4108,ET25,Flat Black 2 Learn More
  10. Slip 15x8 4x108 ET25 Flat Black
    Excl. VAT: £141.67 Incl. VAT: £170.00
    Slip,15,8,4108,ET25,Flat Black Learn More

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