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
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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
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- Data table
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Existing New Tyre Diameter 631.9mm 625.3mm Tyre Circumference 1985.2mm 1964.4mm Additional Poke N/A Inboard Clearance N/A Gearing Change N/A 1.01% Speedo at 30mph 30mph Speedo at 60mph 60mph Ride Height Change N/A Arch Gap Change N/A
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Excl. VAT: £137.50 Incl. VAT: £165.00Grid,15,7,5x114,ET20,Speed Bronze Learn More -
Excl. VAT: £137.50 Incl. VAT: £165.00Grid Max,15,7,5x114,ET20,White Learn More -
Excl. VAT: £141.67 Incl. VAT: £170.00Serious 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 -
Excl. VAT: £141.67 Incl. VAT: £170.00Serious 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 -
Excl. VAT: £180.83 Incl. VAT: £217.00Grid Van 18x8.5 5x112 ET45 Flat Black. 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 -
Excl. VAT: £180.83 Incl. VAT: £217.00Grid 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 -
Excl. VAT: £180.83 Incl. VAT: £217.00Grid Van 18x8.5 5x112 ET45 Steel Grey. 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 -
Excl. VAT: £180.83 Incl. VAT: £217.00Grid Van 18x8.5 5x112 ET45 White. 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 -
Excl. VAT: £180.83 Incl. VAT: £217.00Grid 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 -
Excl. VAT: £180.83 Incl. VAT: £217.00Grid Van 18x8.5 5x120 ET45 Steel Grey. 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
