18 Inch Wheels All Around?
Thread Starter
Pro
Joined: Apr 2002
Posts: 605
Likes: 0
From: Outer Banks NC FIRST IN FLIGHT
18 Inch Wheels All Around?
Anyone out there ever put 18X10.5 and 18X9.5 wheels on there C4?
Just curious about how they would look and perform and also any other pertinent info such as offset and back spacing, etc. I was also wondering if they would have a tendency to lift the car and raise the center of gravity there by diminishing any performance benefits gained by the additional width.
Thanks.
Just curious about how they would look and perform and also any other pertinent info such as offset and back spacing, etc. I was also wondering if they would have a tendency to lift the car and raise the center of gravity there by diminishing any performance benefits gained by the additional width.
Thanks.
Team Owner
Joined: Aug 2000
Posts: 40,156
Likes: 45
From: San Pedro CA
width is width. 9.5" wide wheels will be about the same width no matter the wheel size.
An extra inch will be negligable for traction, but the thinner sidewall will be epic.
I don't think a 1" larger wheel would increase CoG enough to matter, mainly, because the tire has a thinner sidewall.
An extra inch will be negligable for traction, but the thinner sidewall will be epic.
I don't think a 1" larger wheel would increase CoG enough to matter, mainly, because the tire has a thinner sidewall.
Racer
Joined: Jan 2002
Posts: 473
Likes: 8
From: Shreveport LA
Here's what I'm running:
Wheels:
Rear: 18x11.5 (offset - 8.25” of backspace)
Front: 18x10 (offset - 8.5” of backspace)
Tires:
Rear: 335/30/18
Front: 275/35/18
I'm running an inch wider on the rear than you are planning, and I've had to make some minor modifications to the rear suspension and wheelwells. I would guess that you could run 10.5" wides in the rear with no problem. I had GS 17x11's in the rear prior to these and had no problems as all with rubbing, etc. I went through quite a bit of trouble to get that extra 1/2" under there!
Wheels:
Rear: 18x11.5 (offset - 8.25” of backspace)
Front: 18x10 (offset - 8.5” of backspace)
Tires:
Rear: 335/30/18
Front: 275/35/18
I'm running an inch wider on the rear than you are planning, and I've had to make some minor modifications to the rear suspension and wheelwells. I would guess that you could run 10.5" wides in the rear with no problem. I had GS 17x11's in the rear prior to these and had no problems as all with rubbing, etc. I went through quite a bit of trouble to get that extra 1/2" under there!
Safety Car
Joined: Apr 2004
Posts: 3,997
Likes: 1
From: WAY DEEP INSIDE AMERICO,YES YOU LIVE HERE TO!! TX
Originally Posted by ROME
Here's what I'm running:
Wheels:
Rear: 18x11.5 (offset - 8.25” of backspace)
Front: 18x10 (offset - 8.5” of backspace)
Tires:
Rear: 335/30/18
Front: 275/35/18
I'm running an inch wider on the rear than you are planning, and I've had to make some minor modifications to the rear suspension and wheelwells. I would guess that you could run 10.5" wides in the rear with no problem. I had GS 17x11's in the rear prior to these and had no problems as all with rubbing, etc. I went through quite a bit of trouble to get that extra 1/2" under there!
Wheels:
Rear: 18x11.5 (offset - 8.25” of backspace)
Front: 18x10 (offset - 8.5” of backspace)
Tires:
Rear: 335/30/18
Front: 275/35/18
I'm running an inch wider on the rear than you are planning, and I've had to make some minor modifications to the rear suspension and wheelwells. I would guess that you could run 10.5" wides in the rear with no problem. I had GS 17x11's in the rear prior to these and had no problems as all with rubbing, etc. I went through quite a bit of trouble to get that extra 1/2" under there!
Can you post some pic's of your ride
Le Mans Master
Joined: Jan 2002
Posts: 9,036
Likes: 13
From: Edmonton AB
Originally Posted by Trog
I'm running the stock Z06 18x10.5 all around on mine.
this is not a combo I would regularly run on the street. Drove to the
track once and decided I'll have other arrangements in place for next
season.
I use four of the 17x9.5 Z/06 wheels with GY GS-Cs for the street.
.
Safety Car
Joined: Apr 2003
Posts: 3,793
Likes: 9
From: VA
Originally Posted by Kizmo
Anyone out there ever put 18X10.5 and 18X9.5 wheels on there C4?
I was also wondering if they would have a tendency to lift the car and raise the center of gravity there by diminishing any performance benefits gained by the additional width.
Burning Brakes
Joined: Aug 2000
Posts: 1,146
Likes: 2
From: Albuquerque NM
I'm running the afs 18x9.5 front and 18x10.5 rear C6 replica wheels. it seems to float more, I just need to adjust/align the wheels. Of course it could be floating just because I truly like the look.
Corvette Stories
The Best of Corvette for Corvette Enthusiasts
Top 10 Most Expensive Corvettes Ever Sold on Bring A Trailer
Brett Foote
10 Things Every Corvette Owner Needs (2026 Edition)
Michael S. Palmer
8 Most "Only Corvette Owners Understand" Quirks and Problems
Pouria Savadkouei
10 Reasons the C6 Z06 is Still A Performance Benchmark After 20 Years
Joe Kucinski
How Much Horsepower Every Corvette Engine "LOST" in 1972
Joe Kucinski
Top 10 DOs and DON'Ts for Protecting Your Convertible Top!
Michael S. Palmer
Top 10 Most Explosive Corvettes Ever Made: Power-to-Weight Ratio Ranked!
Joe Kucinski
150 hp to 1,250 hp: Every Corvette Generation Compared by the Specs That Matter
Joe Kucinski
8 Coolest Corvette Pace Cars (and Replicas) of All Time
Verdad Gallardo
Melting Slicks
Joined: Mar 2003
Posts: 2,472
Likes: 0
From: Toronto ONTARIO
overall diamater matters. not rim size.
i have 19x11.5s rear and 19x 10s front. they dont stick out or anything. ride is stiff of course but i do have poly bushings, ustom uber stiff bilsteins and stiff z07 springs all around.. and the fattest sway bars too. tire size is 305/30/19 and 255/35/19. after this set im going to a 315/25/19 and 265/30/19 size for an even smaller profile. car is lowered 3 inches or so. handles better... looks better.. lower center of gravity etc etc..
i have 19x11.5s rear and 19x 10s front. they dont stick out or anything. ride is stiff of course but i do have poly bushings, ustom uber stiff bilsteins and stiff z07 springs all around.. and the fattest sway bars too. tire size is 305/30/19 and 255/35/19. after this set im going to a 315/25/19 and 265/30/19 size for an even smaller profile. car is lowered 3 inches or so. handles better... looks better.. lower center of gravity etc etc..
Pro
Joined: May 2002
Posts: 678
Likes: 2
From: Lengede
Has anyone ever heard of the C5 or C6 reproduction rims breaking.
I'm also interested in the C06 wheels repro wheels 9.5" offset 40-44 mm; 10.5" offset 50-56 mm. I will be getting smaller tires up front though, 255/40/18 and 295/35/18 rear. Toyo T1-R seems to be a pretty good tire.
I'm also interested in the C06 wheels repro wheels 9.5" offset 40-44 mm; 10.5" offset 50-56 mm. I will be getting smaller tires up front though, 255/40/18 and 295/35/18 rear. Toyo T1-R seems to be a pretty good tire.
Pro
Joined: May 2002
Posts: 678
Likes: 2
From: Lengede
Originally Posted by DieL
overall diamater matters. not rim size.
i have 19x11.5s rear and 19x 10s front. they dont stick out or anything. ride is stiff of course but i do have poly bushings, ustom uber stiff bilsteins and stiff z07 springs all around.. and the fattest sway bars too. tire size is 305/30/19 and 255/35/19. after this set im going to a 315/25/19 and 265/30/19 size for an even smaller profile. car is lowered 3 inches or so. handles better... looks better.. lower center of gravity etc etc..
i have 19x11.5s rear and 19x 10s front. they dont stick out or anything. ride is stiff of course but i do have poly bushings, ustom uber stiff bilsteins and stiff z07 springs all around.. and the fattest sway bars too. tire size is 305/30/19 and 255/35/19. after this set im going to a 315/25/19 and 265/30/19 size for an even smaller profile. car is lowered 3 inches or so. handles better... looks better.. lower center of gravity etc etc..
Safety Car
Joined: Apr 2003
Posts: 3,793
Likes: 9
From: VA
Originally Posted by Kizmo
Once again, not any help.
http://forums.corvetteforum.com/show...97&forum_id=48
Thread Starter
Pro
Joined: Apr 2002
Posts: 605
Likes: 0
From: Outer Banks NC FIRST IN FLIGHT
Originally Posted by steve9899
Here's another idea. Go read the answers in your previous thread on the topic so you don't have to dupe yourself.
http://forums.corvetteforum.com/show...97&forum_id=48
http://forums.corvetteforum.com/show...97&forum_id=48
Ha Ha! You must be in love with me because you keep looking for me all over the place.
That post wasn't about 18 inch wheels all the way around, so I haven’t checked it in awhile, but thanks for the reminder.
Burning Brakes
Joined: Jan 2002
Posts: 1,228
Likes: 1
From: Dallas Texas
Originally Posted by ROME
Here's what I'm running:
