Jersey Tom wrote:Are you concerned about the potential for excessive low-G oversteer with such a rearward weight distribution? What would the contingency be in that case? More tire size split?
Thanks for chiming in Tom, to be honest I am not concerned about low-G understeer because I'm completely ignorant to it. So I understand better, when you say low G are you specifically referring to the linear range of the tyres, or to low steering angles? For example, if the tyres are quite linear to 0.6G, do you speak of the range 0-0.6G, or is there some effect which causes a change in balance at very low levels of lateral acceleration say 0-0.3? Its something I haven't seen before.
Mainly I'm thinking of low G in the sense of when lateral load transfer distribution effects can be neglected, or at the very least where handling is dominated by wheelbase, forward mass distribution, and basic tire properties (effectively these are the assumptions of the stability and control metrics in Race Car Vehicle Dynamics). Generally it will be in the linear range of the tires, sure.
Good bit of research finding the correlation of mass distribution to tire width split though. This
may be of interest as well.
As for tires themselves, the possibilities are endless. Suppose it comes down to your balance of requirements, whats available in desired sizes, and cost. I may be somewhat biased but I personally sport Dunlop Z1's on my car as a pretty good max performance summer tire in a wide range of sizes at a fair price. Goodyear's Eagle RS DOT race tires (not to be confused with broad market RS-A's) are pretty sporty as a more race-specific application.
Grip is a four letter word. All opinions are my own and not those of current or previous employers.