If it seems like the posts don’t have a lot of content lately you’re right. I’m writing because I have to as a writer. Also to get better as a writer I have to write something as often as I can. So, I’m writing.
I’m still torn about tires and wheels for the hot rod. On the one hand for best performance at Goodguys I need to run a short wide tire that gets the car down lower and drops the CG which improves cornering power, and a taller tire that lets me clear speed bumps for normal driving around, OR I could get one set of wheels and tires that are just tall enough to get me over the speed bumps and still has the good grip for Goodguys. If I go with two sets of tires I’ll run the 255/60R15 BF Goodrich TA Radial as my dedicated street tire and the Maxxis Victra VR-1 245/40R15 as my dedicated race tire. If I go with a single wheel/tire for everything I’m looking at the 245/40R17 in a variety of brands up to 285/40R17 also in a variety of brands, and maybe a 315/35R17 Goodyear to get the grip and barely raise the bottom of the car over speed bumps.
There are three reasons for going to the 17″ diameter wheel, the first being that there are many more brands and sizes of tires available in 17″ diameter wheels than 15″. The second is there is room to stuff some huge disk brakes by T-bucket standards inside a 17″ wheel. For a T-bucket 11″ front brakes are huge, but I can easily fit a 13″ front disk inside the 17″ wheel and there aren’t any bigger brakes I can fit to the early Ford spindle. Unfortunately the rear brakes are limited by the constraints of the knuckle from the minivan to be only 11″ or so. Bigger brakes mean more stopping power from the same pedal pressure and calipers with less fade. That means shorter stops or less time braking and more time on the gas for racing. The third reason is it’s much less expensive to buy 4 wheels and tires than 8, even though that makes both sets of tires last longer. So I may have to give up a tiny bit of cornering grip to get better braking and much lower costs. Running 17″ wheels with 40 profile tires looks strange on a bucket though, so I might go with the 15″ tire combinations in spite of the extra cost, because in reality the 11″ brakes are just barely adequate for the weight of the car, and there is room for 12.2″ discs on the front with special low-profile calipers that are more than barely adequate. The 255/60R15 TA Radial looks “right” on a bucket, while the 245/40R15 Maxxis tire has much more grip and is roughly equal to the grip from the 17″ tires between the reduced center of gravity and the tread width.
Ugh! I hate when stuff like this happens, needing to make a decision without enough data to make the best decision, and not enough money to get the data.
Have a nice weekend! Opus the Unkillable