Rules and Regulations Update, Rear RIM Width

Rules and Regulations Update, Rear RIM Width

by July 27, 2021 0 comments

Many thanks for your comments on our recent thread regarding rear wheel widths. Kelvin and I have had over 60+ comments along with a vast number of private messages and telephone calls from people up and down the Grid. I’m very pleased that most of the comments have been very constructive and allowed us to have an unbiased view of how to proceed.

Admittedly the current ruling on Rims seems out of line with other Championships, this is a real step away from what we at RHPK set out to achieve. We want to encourage teams up and down the country to join us without further expense and enjoy club-level racing. On the other hand, it could potentially open up further costs for teams who do not use the wider rims currently. To add further concerns, we have also seen slight discrepancies when measuring existing “200” rims.

At RHPK we have always been transparent with our decisions, and after some considerable thought, we are updating the regulations with the following amendment…


Wheels must be of metal or alloy construction in sizes suitable for the tyres specified. They may be of one or two-piece construction. Maximum wheel widths between the beads are:
Front: 130mm
Rear: 200mm ~2% +/- allowance


This will give flexibility to competitors up and down the grid to use a number of different rims if preferred but also prevent competitors from using the expensive, wider 214 rims.

The decision has been incredibly hard but given the amount of feedback and concern our paddock has raised, I believe it is the right decision with a view of voting for a further change at the end of the year.

This rule will come into effect on the 7th of August.

Thank you for your understanding,

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