Brian wrote:Your stock 17x7 wheel is a bit over 17 pounds. Thus the 6UL is dropping a few pounds and will have the best ride, the Ampliform is about a push on weight compared to stock but wider. The wider wheel will support sidewall more, so when all other things are equal, the Ampliform will ride stiffer because of more sidewall support with benefit of giving a lot more stability in the corners for the same tire size. Most going with 17x8 go with 225/45 or 235/40. I seem to recall that tire choice of yours comes in 225/45. Yes, slightly tall but many have posted pics at Miata.net, perhaps have a look. I currently have 225/45/17 on wife's 17x8 Tungsten 6UL on her Supercharged RF.
So stock weight is ~17lbs for wheel and 19lbs for tire for 36lbs total. So, gonna have to be the 6UL at ~14.7lbs, and then if I do go with the MSS4S at 22 lbs, that'll put me at a wash on weight at ~36.7lbs...thenthe brakes will have to be the unspring weight winner for me!!
What's your thought on this? The MSS4S has a 0.2" taller sidewall, which in theory should give a bit more "compliant" flex...along with putting it on an 8"rim instead of the recommended 8.5" rim, should also mean a bit more flex (range of fitment is 8.0-9.5").
Am I wrong in this thinking??
I really want the MSS4S, BUT am willing to rethink a different tire, but the 235/40s are limited. I don't really want a 225 though.
I should mention, this is my wife's car..and a s**t fit will occur if I decrease her love of her Miata!! She has sanctioned the BIG RED BRAKES..AND wants bigger wheels..but must keep her comfortable too! I want sway bars, exhaust, and S/C also so keeping her happy will get me more mods with less resistance