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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8 Item(s)

  1. Grid 17x7.5 4x100 ET45 Steel Grey
    Excl. VAT: £150.00 Incl. VAT: £180.00
    Grid,17,7.5,4100,ET45,Steel Grey Learn More
  2. Kyusha 15x7 4x100 ET38 Silver with Polished Face
    Excl. VAT: £137.50 Incl. VAT: £165.00
    A hugely popular wheel for the following vehicles: Honda Civic Mazda MX5 Mitsubishi Colt Seat Arosa Seat Ibiza (4 stud) Suzuki Swift Toyota Starlet Toyota Yaris Vauxhall Corsa (4 stud) Volkswagen Lupo Volkswagen Golf Mk1 / Mk2 Volkswagen Polo (4 stud) Lower offset wheels may require some arch work to avoid the tyres rubbing. Learn More
  3. RKR 15x8 4x100 ET0 Steelgrey
    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
  4. RKR 15x8 4x100 ET10 Steelgrey
    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. RKR 15x9 4x100 ET0 Steelgrey
    Excl. VAT: £154.17 Incl. VAT: £185.00
    RKR,15,9,4100,ET0,Steelgrey Learn More
  6. Slip 16x7 4x100 ET40 Steelgrey
    Excl. VAT: £139.17 Incl. VAT: £167.00
    Slip,16,7,4100,ET40,Steelgrey Learn More
  7. Spec8 15x7 4x100 ET35 Steelgrey
    Excl. VAT: £137.50 Incl. VAT: £165.00
    A hugely popular wheel for the following vehicles: Honda Civic Mazda MX5 Mitsubishi Colt Seat Arosa Seat Ibiza (4 stud) Suzuki Swift Toyota Starlet Toyota Yaris Vauxhall Corsa (4 stud) Volkswagen Lupo Volkswagen Golf Mk1 / Mk2 Volkswagen Polo (4 stud) Lower offset wheels may require some arch work to avoid the tyres rubbing. Learn More
  8. Torque 17x8.0 4x100 ET35 Steel Grey - Lotus Elise S2 & Exige (rear wheel)
    Excl. VAT: £158.33 Incl. VAT: £190.00
    Torque 17x8.0 4x100 ET35 Steel Grey - Lotus Elise S2 & Exige (rear wheel) Specified perfectly for the rear of a Lotus Elise S2 or Lotus Exige, with the correct 4x100 PCD and 56.7mm centre bore. These can be paired with our 16x7.0, ET27 front wheels to provide a full set in the perfect dimensions. Designed to accept the original Lotus Centre caps. Learn More

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8 Item(s)