New summer/track wheel set-up
03-26-18, 04:46 PM
#33
Driver School Candidate
03-27-18, 08:39 AM
#36
Driver School Candidate
LexusfanVA has 18x9.5 +38 wheels on his car which is tad more aggressive than the set up you guys are asking about. It looks like +40 will work as well.
03-27-18, 07:48 PM
#38
Tech Info Resource
iTrader: (2)
Be very careful with lowering the chassis. You could very easily make the car feel better but drive slower.
03-28-18, 10:19 AM
#39
Driver School Candidate
03-28-18, 11:58 AM
#40
Happy to say I happen to find a used set of these locally in the *exact* fitment Mike has, in great shape to boot... Shockingly, I'm paying $900 and they even include some Direzza ZII Star Spec's with a bit of life left. So stoked! Pictures to follow in a few weeks once they go on with the Penskes.
Also, I have some Hoosier R7's ready to go on from usedracetires.com as soon as the Direzza's wear out.
And Lobux has covered this point ad naseum on some other threads... But in summary, changing offsets from stock fitment negatively impacts your roll center, which can hurt performance, but it's debatable how much. All I know is if RR Racing and FIGS track mules are both w/Penskes, both lowered, and both using the same square wheel/tire sizes promoted here... you're probably in good shape to follow their lead.
Here's a good primer on it, btw: http://www.motoiq.com/MagazineArticl...ll-center.aspx
Also, I have some Hoosier R7's ready to go on from usedracetires.com as soon as the Direzza's wear out.
And Lobux has covered this point ad naseum on some other threads... But in summary, changing offsets from stock fitment negatively impacts your roll center, which can hurt performance, but it's debatable how much. All I know is if RR Racing and FIGS track mules are both w/Penskes, both lowered, and both using the same square wheel/tire sizes promoted here... you're probably in good shape to follow their lead.
Here's a good primer on it, btw: http://www.motoiq.com/MagazineArticl...ll-center.aspx
03-28-18, 02:57 PM
#41
Tech Info Resource
iTrader: (2)
Happy to say I happen to find a used set of these locally in the *exact* fitment Mike has, in great shape to boot... Shockingly, I'm paying $900 and they even include some Direzza ZII Star Spec's with a bit of life left. So stoked! Pictures to follow in a few weeks once they go on with the Penskes.
Also, I have some Hoosier R7's ready to go on from usedracetires.com as soon as the Direzza's wear out.
And Lobux has covered this point ad naseum on some other threads... But in summary, changing offsets from stock fitment negatively impacts your roll center, which can hurt performance, but it's debatable how much. All I know is if RR Racing and FIGS track mules are both w/Penskes, both lowered, and both using the same square wheel/tire sizes promoted here... you're probably in good shape to follow their lead.
Here's a good primer on it, btw: http://www.motoiq.com/MagazineArticl...ll-center.aspx
Also, I have some Hoosier R7's ready to go on from usedracetires.com as soon as the Direzza's wear out.
And Lobux has covered this point ad naseum on some other threads... But in summary, changing offsets from stock fitment negatively impacts your roll center, which can hurt performance, but it's debatable how much. All I know is if RR Racing and FIGS track mules are both w/Penskes, both lowered, and both using the same square wheel/tire sizes promoted here... you're probably in good shape to follow their lead.
Here's a good primer on it, btw: http://www.motoiq.com/MagazineArticl...ll-center.aspx
04-04-18, 09:58 AM
#45
Driver School Candidate
Nice setup Mikersoft and everyone else who threw up pictures on the thread. I've been contemplating the "downgrade" to 18s on my IS-F. The meaty tires looks might nice!