Okay guys my friend has a 02 Z28 he visits the road course occasionally and hes pretty rough on tires in general. Right now he has 17in 10spoke SS wheels with 275 Eagle F1s(GS-D3 maybe)(treadwear 300) all the way around. His dad has a very extensively modded 02 with 315 BFG KDs(i may be wrong)(treadwear 200) Thoses tires grip so well on his dads car its ridiculous. Now heres his dilema. He needs some new tires and he cant decide which ones. The 275 BFGs or more 275 F1s. Do you think the extra grip provided by the BFGs would be worth the extra investment and loss of longevity.