Hi Steve, I think your suggestion of competitors needing two sets of tyres to be competitive is exactly what most competitors would like to avoid, due to cost (an additional set of wheels an tyres would cost about the same as a season of entry fees) and in addition feeling the need to change suspension setup for different tyres. Currently we have a gentleman’s agreement in Class 3 that we all run on Avon ZZSs. This has leveled the playing field, and in general is well respected. I, and I believe, several others have suggested changing the regs to read something like: "For Class 1 and 2 the recommended tyre is YOKO A539, for classes 3 and 4 the recommended tyre is Avon ZZS. To obtain class awards at individual events any MSUK List 1A or List 1B permitted tyre can be used in class 1 and 2, and class 3 and 4 respectively, however, to score championship points the recommended tyres must be used, and the championship scores will be awarded relative to the fastest driver who is using the recommended tyres. " Note, this does not preclude a newcomer to the dabbling with whatever tyres they have on their car, just if they want to get serious then they would need to buy the recommended tyre. The aim is remove the risk of a costly and unnecessary tyre war [which would put off some current and possibly some new competitors] and ensure that the awards decided against PBs and records are not won by a new tyre advantage. It would seem unfair given how the championship, Edward Lewis etc. are decided to have a class (or two) where everyone in that class suddenly goes significantly faster due to a tyre change. It would mean great performances in other classes would not stand a chance. For instance if a substantially better list 1A was found then the championship would realistically only be between class 1 and 2, do we want to fall into a situation like that?