wheel widening
Thread Starter
Speedy
Joined: Mar 2007
Posts: 6,110
Likes: 931
From: Tn
2024 C8 of the Year Finalist - Modified
wheel widening
currently i have the optioned comp grey wheels, my plan is to find another from pair and have them widened. according to spin monster the max width an 18in rim can go is 10.5, now i do have more clearance from the wheel to fender so my plan is to use a 1/2 inch wheel spacer and longer studs to allow me to run an 11inch rim in the rear.
so in the end my wheels will be:
18X8.5 front possibly have the front widened to 9.5 as well (depending on price)
18X11 rear
from there i will probally go with toyo r888 275 fron and 335 rear.
can you guys recomend wheel studs and a 1/2 spacer?
so in the end my wheels will be:
18X8.5 front possibly have the front widened to 9.5 as well (depending on price)
18X11 rear
from there i will probally go with toyo r888 275 fron and 335 rear.
can you guys recomend wheel studs and a 1/2 spacer?
Thread Starter
Speedy
Joined: Mar 2007
Posts: 6,110
Likes: 931
From: Tn
2024 C8 of the Year Finalist - Modified
there going to be the oem front 18X8.5s only widened to 11 inches, spinmonster is running this setup with no issues, im debating if i should get greedy and go for 11.5 inches
Thread Starter
Speedy
Joined: Mar 2007
Posts: 6,110
Likes: 931
From: Tn
2024 C8 of the Year Finalist - Modified
i dont know honestly what the ofset of the stock wheels are, im at stock height and would be using the setup on the street with occasional track use
Thread Starter
Speedy
Joined: Mar 2007
Posts: 6,110
Likes: 931
From: Tn
2024 C8 of the Year Finalist - Modified
how much power are you putting down, my future plans are 5-550rwhp so id like a setup that can handle that
Tech Contributor
Joined: Mar 2003
Posts: 12,094
Likes: 197
From: Colorado Springs, CO
St. Jude Donor '08-'09-'10-'11
Do not clearance the control arm for light touch. It doesnt touch in actual used even when tested on curbes and speed bumps.
Offsets are different for the width of the wheel but dont affect where they are in relation to the fender since offsets take back spacing into account so it cant be quoted that way. All these sizes assume a stock front 18" as the donor wheel.
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Tech Contributor
Joined: Mar 2003
Posts: 12,094
Likes: 197
From: Colorado Springs, CO
St. Jude Donor '08-'09-'10-'11
Tech Contributor
Joined: Mar 2003
Posts: 12,094
Likes: 197
From: Colorado Springs, CO
St. Jude Donor '08-'09-'10-'11
currently i have the optioned comp grey wheels, my plan is to find another from pair and have them widened. according to spin monster the max width an 18in rim can go is 10.5, now i do have more clearance from the wheel to fender so my plan is to use a 1/2 inch wheel spacer and longer studs to allow me to run an 11inch rim in the rear.
so in the end my wheels will be:
18X8.5 front possibly have the front widened to 9.5 as well (depending on price)
18X11 rear
from there i will probally go with toyo r888 275 fron and 335 rear.
can you guys recomend wheel studs and a 1/2 spacer?
so in the end my wheels will be:
18X8.5 front possibly have the front widened to 9.5 as well (depending on price)
18X11 rear
from there i will probally go with toyo r888 275 fron and 335 rear.
can you guys recomend wheel studs and a 1/2 spacer?
1/2" wheel studs and a spacer will move the tire out to where it will make contact with the fender. The stock 18 on the rear is a few mm closer to the fender and cant use a spacer. If you use the 11" wheel with a 315 or 335 it will contact the fender due to tire bulge. A 305 is the correct 11" wheel tire size.
Team Owner
Joined: Jun 2007
Posts: 31,088
Likes: 23
St. Jude Donor '08 thru '13
My 19X11 widened rear does contact the control arm. I did slight clearancing of the arm due to the fact that at full unload of the suspension (something that does happen in the events I run), there is contact.
It required very little clearancing, but I did have to do it.
I don't have direct experience with a 19X11.5" rear, but reasoning would indicate to me that the rubbing of the rim on the control arm would be present, and likely more present than with my current 11" widened OEM rim.
The 325mm rubber (stock Z06 rear tire) just baaaaaaaarely contacts the inner fender well. I removed a section on the inner fender liner, but then added self-adhesive sound deadening material (which is flush to the body, and pretty thin), and I get just a trace of tire rub- I've never heard it make contact, but the marks are there.
Again, if you're not going airborne, you may not encounter these issues.
It required very little clearancing, but I did have to do it.
I don't have direct experience with a 19X11.5" rear, but reasoning would indicate to me that the rubbing of the rim on the control arm would be present, and likely more present than with my current 11" widened OEM rim.
The 325mm rubber (stock Z06 rear tire) just baaaaaaaarely contacts the inner fender well. I removed a section on the inner fender liner, but then added self-adhesive sound deadening material (which is flush to the body, and pretty thin), and I get just a trace of tire rub- I've never heard it make contact, but the marks are there.
Again, if you're not going airborne, you may not encounter these issues.
