C3 Tech/Performance V8 Technical Info, Internal Engine, External Engine, Basic Tech and Maintenance for the C3 Corvette
Sponsored by:
Sponsored by:

wheel width questions

Thread Tools
 
Search this Thread
 
Old Feb 26, 2010 | 12:57 PM
  #1  
77vettedude's Avatar
77vettedude
Thread Starter
Cruising
 
Joined: Feb 2010
Posts: 12
Likes: 0
Default wheel width questions

Hey guys,

Now that I got the spacer stuff down, and did some ore research.. its not really worth that hassle.

Those Boss 338's are really nice actually, its classic with a modern twist.

I have some width questions..
I have standard trailing arms, no offset arms, and I HAVE NO INTENTION of getting the offset arms.

I was thinking about this setup, with the wide tires in the rear would it work? or rub?

(4) Boss wheels Style 338 in a 18"x8"
With (2) Falken FK452 255/45/18
and (2) Falken FK452 275/40/18

Or with the rear
I can go with a 18x9.5" will that fit? what tire sizes am I limited to? I want the front to look beefy, I have the 255/45/20 on my 300C now, its nice, even though the tire is 2" bigger on my 300C shorter diameter makes the wheel just a lil fatter, and I saw this on a member's car already. The rear, I want to look more beefy than the front, but not to where it looks like arms, I spec'd out originally, 285/40/18, figured way too big. So a nice size I figured from looking around is the 275/40/18.

Good setup? Suggestions?

Thanks guys
Reply
Old Feb 26, 2010 | 01:52 PM
  #2  
Gordonm's Avatar
Gordonm
Race Director
25 Year Member
Liked
Loved
Community Favorite
 
Joined: Dec 1999
Posts: 19,610
Likes: 778
From: Forked River NJ
Default

The 275 40 18 will not fit on an 8 inch rim. You should go to a 9.5 or a 10 inch rim. I am running an 18X10 with a 5.5 backspace on stock trailing arms. I did have to relocate the ebrake bracket but other than that they fit fine.

On the front I run a 255 45 17 on 17X8 inch rim with a 4 inch backspace. The 18s might rub because I am close with my setup.
Reply
Old Feb 26, 2010 | 01:56 PM
  #3  
Bee Jay's Avatar
Bee Jay
Safety Car
20 Year Member
Liked
Loved
Community Favorite
 
Joined: Nov 2005
Posts: 3,961
Likes: 573
From: Lompoc, CA. Santa Barbara County
Default

I ran 275-40/18 tires on 9.5" wheels without an offset trailing arm. Worked fine. I think the 285-40/18 tire would fit too, not much difference in size.
Bee Jay
this picture is with 275-40/18s on 9.5" wheels, no offset trailing arms.
Reply
Old Feb 26, 2010 | 02:38 PM
  #4  
77vettedude's Avatar
77vettedude
Thread Starter
Cruising
 
Joined: Feb 2010
Posts: 12
Likes: 0
Default

I don't want to have to relocate any ebrake stuff.
The car has to go through a big transformation already, and I don't wanna sped hella money any more. I have other plans, the tranny build is gonna be over 3,000$ plus interior and everything else. I've spent like easy 50,000$ already.

The paint and body work is all custom. I have the adjustable monospring kit for the front and rear through VBandP SO I;m sure the rubbing won't be a BIG issue. I see you guys did it fine under stock conditions as well.

They make that rim in a 9.5"

If I wanted a beef tire for the rear to fit on the 18x8, what is the suggestion. I plan to wrap the car in falken's FK452 rubber.
Reply
Old Feb 26, 2010 | 03:14 PM
  #5  
Bee Jay's Avatar
Bee Jay
Safety Car
20 Year Member
Liked
Loved
Community Favorite
 
Joined: Nov 2005
Posts: 3,961
Likes: 573
From: Lompoc, CA. Santa Barbara County
Default

Originally Posted by 77vettedude
I don't want to have to relocate any ebrake stuff.
The car has to go through a big transformation already, and I don't wanna sped hella money any more. I have other plans, the tranny build is gonna be over 3,000$ plus interior and everything else. I've spent like easy 50,000$ already.

The paint and body work is all custom. I have the adjustable monospring kit for the front and rear through VBandP SO I;m sure the rubbing won't be a BIG issue. I see you guys did it fine under stock conditions as well.

They make that rim in a 9.5"

If I wanted a beef tire for the rear to fit on the 18x8, what is the suggestion. I plan to wrap the car in falken's FK452 rubber.
You spent $50,000 and don't want to do a $2 ebrake mod? You may be in luck. My car already had the ebrake bracket moved or relocated to the top of the trailing arm by the factory. I'm not sure what year GM started that, but take a look. Where is the e brake bracket on your trailing arms?
Bee Jay

Last edited by Bee Jay; Feb 26, 2010 at 03:18 PM.
Reply
Old Feb 26, 2010 | 03:20 PM
  #6  
Gordonm's Avatar
Gordonm
Race Director
25 Year Member
Liked
Loved
Community Favorite
 
Joined: Dec 1999
Posts: 19,610
Likes: 778
From: Forked River NJ
Default

I agree with Bee Jay. It takes a couple of minutes with a quick weld job. If you are careful you can use your existing ebrake brackets. I did it that way. Cost me nothing to do. Maybe a little time.
Reply
Old Feb 26, 2010 | 03:47 PM
  #7  
KTKelly's Avatar
KTKelly
Burning Brakes
10 Year Member
 
Joined: May 2007
Posts: 1,042
Likes: 1
From: Greensboro NC
Default

How about:


245/45-18 front on the 18x8's (255 is really too big for the front anyway).

275/40-18 rear on the 18x9.5's (yes, they come in that size).


Front and rear will have the same diameter, so you could have a spare.



Parking brake cable can simply be tied offm with cable ties, to keep it from rubbing (use a heavy duty one).
Reply
Old Feb 26, 2010 | 05:36 PM
  #8  
Bee Jay's Avatar
Bee Jay
Safety Car
20 Year Member
Liked
Loved
Community Favorite
 
Joined: Nov 2005
Posts: 3,961
Likes: 573
From: Lompoc, CA. Santa Barbara County
Default

Originally Posted by KTKelly
How about:


245/45-18 front on the 18x8's (255 is really too big for the front anyway).

275/40-18 rear on the 18x9.5's (yes, they come in that size).


Front and rear will have the same diameter, so you could have a spare.



Parking brake cable can simply be tied offm with cable ties, to keep it from rubbing (use a heavy duty one).
The cable isn't the problem, it's the bracket that will chew into your tire sidewall. Hence the need for a spare. Toss the spare and carry a AAA card. Go for the staggered look with a smaller overall diameter tire up front.
Bee Jay

Reply
Corvette Stories

The Best of Corvette for Corvette Enthusiasts

story-0

10 Ugly Corvettes That We Still Kinda Love

 Joe Kucinski
story-1

Top 10 Most Expensive Corvettes Ever Sold on Bring A Trailer

 Brett Foote
story-2

10 Things Every Corvette Owner Needs (2026 Edition)

 Michael S. Palmer
story-3

8 Most "Only Corvette Owners Understand" Quirks and Problems

 Pouria Savadkouei
story-4

10 Reasons the C6 Z06 is Still A Performance Benchmark After 20 Years

 Joe Kucinski
story-5

How Much Horsepower Every Corvette Engine "LOST" in 1972

 Joe Kucinski
story-6

Top 10 DOs and DON'Ts for Protecting Your Convertible Top!

 Michael S. Palmer
story-7

Top 10 Most Explosive Corvettes Ever Made: Power-to-Weight Ratio Ranked!

 Joe Kucinski
story-8

150 hp to 1,250 hp: Every Corvette Generation Compared by the Specs That Matter

 Joe Kucinski
story-9

8 Coolest Corvette Pace Cars (and Replicas) of All Time

 Verdad Gallardo
Old Feb 26, 2010 | 07:14 PM
  #9  
KTKelly's Avatar
KTKelly
Burning Brakes
10 Year Member
 
Joined: May 2007
Posts: 1,042
Likes: 1
From: Greensboro NC
Default

Originally Posted by Bee Jay
The cable isn't the problem, it's the bracket that will chew into your tire sidewall.
Then why have so many here stated that they simply straped the cable to the trailing arm?

Toss the spare and carry a AAA card.
I'd rather put a spare on, and be on my way, than I would wait some undetermined amount of time for a two truck to show up.

Go for the staggered look with a smaller overall diameter tire up front.
Could go "staggered" and still have the same diameter with a little effort..
Reply
Old Feb 26, 2010 | 08:51 PM
  #10  
TimAT's Avatar
TimAT
Le Mans Master
15 Year Member
Liked
Loved
 
Joined: Oct 2006
Posts: 7,123
Likes: 433
From: Gladstone MO
C3 of Year Finalist (appearance mods) 2019
Default

Interesting. Makes me wonder how I managed to put 17x9 wheels with 4" backspacing and 295/40 tires on with stock trailing arms and the ebrake bracket in the stock location on the side of the arm and nothing rubbed.
Reply
Old Feb 26, 2010 | 09:15 PM
  #11  
77vettedude's Avatar
77vettedude
Thread Starter
Cruising
 
Joined: Feb 2010
Posts: 12
Likes: 0
Default

Originally Posted by KTKelly
Then why have so many here stated that they simply straped the cable to the trailing arm?



I'd rather put a spare on, and be on my way, than I would wait some undetermined amount of time for a two truck to show up.



Could go "staggered" and still have the same diameter with a little effort..
No... My Vette doesnt have it



So you're saying with the 9.5" and a 275/40/18 in the rear it will rub?
and with a 8" 275/40/18" it will rub too?

The staggered look is killer on ur Vette BJ, surprising to me. I don;t really like the stag look. I think the bigger tire in the rear does it for me more.
Reply
Old Feb 26, 2010 | 11:17 PM
  #12  
Bee Jay's Avatar
Bee Jay
Safety Car
20 Year Member
Liked
Loved
Community Favorite
 
Joined: Nov 2005
Posts: 3,961
Likes: 573
From: Lompoc, CA. Santa Barbara County
Default

Originally Posted by KTKelly

I'd rather put a spare on, and be on my way, than I would wait some undetermined amount of time for a two truck to show up.


Good plan, but where are you going to put that 9.5" wheel with a flat 275/40-18 tire on it? Not in your spare tire carrier.
Reply
Old Feb 27, 2010 | 09:30 AM
  #13  
KTKelly's Avatar
KTKelly
Burning Brakes
10 Year Member
 
Joined: May 2007
Posts: 1,042
Likes: 1
From: Greensboro NC
Default

Originally Posted by Bee Jay
Good plan, but where are you going to put that 9.5" wheel with a flat 275/40-18 tire on it? Not in your spare tire carrier.

The wife will be walking at that point in time.....
Reply
Old Feb 27, 2010 | 09:48 AM
  #14  
Gordonm's Avatar
Gordonm
Race Director
25 Year Member
Liked
Loved
Community Favorite
 
Joined: Dec 1999
Posts: 19,610
Likes: 778
From: Forked River NJ
Default

Originally Posted by TimAT
Interesting. Makes me wonder how I managed to put 17x9 wheels with 4" backspacing and 295/40 tires on with stock trailing arms and the ebrake bracket in the stock location on the side of the arm and nothing rubbed.
The 4 inch backspacing is the key here. That is the stock backspacing. So by going wider you just moved the outer lip of the wheel away from the car. The inner lip is in the same position as the stock wheel which obviously did not rub. Most of us running wider wheels have either a 5 or 5.5 inch backspace which puts the inner wheel lip 1 to 1.5 inches closer to the trailing arms which makes it rub.

On another note how does just strapping the ebrake cable to the arm work. If you are not using the bracket at all the ebrake will not work. Might as well just remove the whole ebrake cable then.
Reply
Old Feb 27, 2010 | 11:47 AM
  #15  
Bee Jay's Avatar
Bee Jay
Safety Car
20 Year Member
Liked
Loved
Community Favorite
 
Joined: Nov 2005
Posts: 3,961
Likes: 573
From: Lompoc, CA. Santa Barbara County
Default

Originally Posted by KTKelly
The wife will be walking at that point in time.....
Not a good plan.
Reply
Old Feb 27, 2010 | 11:50 AM
  #16  
Bee Jay's Avatar
Bee Jay
Safety Car
20 Year Member
Liked
Loved
Community Favorite
 
Joined: Nov 2005
Posts: 3,961
Likes: 573
From: Lompoc, CA. Santa Barbara County
Default

Originally Posted by TimAT
Interesting. Makes me wonder how I managed to put 17x9 wheels with 4" backspacing and 295/40 tires on with stock trailing arms and the ebrake bracket in the stock location on the side of the arm and nothing rubbed.
You can run 4" backspacing with 295 tires because you have flares. I'm assuming the OP does not have flares. But you know what assuming does.
Bee Jay
Reply
Old Feb 27, 2010 | 03:39 PM
  #17  
mkbowling's Avatar
mkbowling
Cruising
 
Joined: Nov 2008
Posts: 13
Likes: 0
From: Rushville Indiana
Default

I have 18x9.5 stock backspace rears and 18x285/40 nitto 555 and had to relocate the ebrake took 10 min a side did it myself no big deal. http://forums.corvetteforum.com/pict...302144&thumb=1
Reply

Get notified of new replies

To wheel width questions

Old Feb 28, 2010 | 05:23 PM
  #18  
pete_79's Avatar
pete_79
8th Gear
 
Joined: Feb 2010
Posts: 8
Likes: 0
Default

Boss 338 18x8 front 18x9.5 rear. Tires are Michelin Pilot Sport 255/45 front 285/40 rear with stock trailing arms and re located parking brake cable bracket.
they fit fine
Reply
Old Feb 28, 2010 | 08:20 PM
  #19  
Bee Jay's Avatar
Bee Jay
Safety Car
20 Year Member
Liked
Loved
Community Favorite
 
Joined: Nov 2005
Posts: 3,961
Likes: 573
From: Lompoc, CA. Santa Barbara County
Default

Originally Posted by pete_79
Boss 338 18x8 front 18x9.5 rear. Tires are Michelin Pilot Sport 255/45 front 285/40 rear with stock trailing arms and re located parking brake cable bracket.
they fit fine
Your car is a 79? And you had to relocate your parking brake cable bracket? Mine came from the factory located on top of the trailing arm.
Bee Jay
Reply
Old Mar 1, 2010 | 07:01 PM
  #20  
pete_79's Avatar
pete_79
8th Gear
 
Joined: Feb 2010
Posts: 8
Likes: 0
Default

Originally Posted by Bee Jay
Your car is a 79? And you had to relocate your parking brake cable bracket? Mine came from the factory located on top of the trailing arm.
Bee Jay
Yup had to move the bracket and my car is a 79. BTW your Vette looks great
Reply



All times are GMT -4. The time now is 11:16 AM.

story-0
10 Ugly Corvettes That We Still Kinda Love

Slideshow: 10 ugly Corvettes that we still kinda love.

By Joe Kucinski | 2026-06-03 10:34:17


VIEW MORE
story-1
Top 10 Most Expensive Corvettes Ever Sold on Bring A Trailer

A lot of money has changed hands at the online auction house over the years.

By Brett Foote | 2026-06-03 10:21:50


VIEW MORE
story-2
10 Things Every Corvette Owner Needs (2026 Edition)

Slideshow: 10 great gifts Corvette enthusiasts actually want for Father's Day!

By Michael S. Palmer | 2026-06-03 15:43:40


VIEW MORE
story-3
8 Most "Only Corvette Owners Understand" Quirks and Problems

Slideshow: These are the quirks, annoyances, and oddly lovable problems that every Corvette owner eventually learns to live with.

By Pouria Savadkouei | 2026-05-28 09:31:39


VIEW MORE
story-4
10 Reasons the C6 Z06 is Still A Performance Benchmark After 20 Years

Slideshow: 10 reasons why the C6 Z06 is still a performance benchmark after 20 years.

By Joe Kucinski | 2026-05-27 17:20:09


VIEW MORE
story-5
How Much Horsepower Every Corvette Engine "LOST" in 1972

Slideshow: How much horsepower every Corvette engine lost in 1972.

By Joe Kucinski | 2026-05-27 16:54:53


VIEW MORE
story-6
Top 10 DOs and DON'Ts for Protecting Your Convertible Top!

Slideshow: How to Protect A Convertible Top: 10 DOs & DON'Ts

By Michael S. Palmer | 2026-04-03 00:00:00


VIEW MORE
story-7
Top 10 Most Explosive Corvettes Ever Made: Power-to-Weight Ratio Ranked!

Slideshow: The 10 most explosive Corvettes ever built based on power-to-weight ratio.

By Joe Kucinski | 2026-05-20 07:23:03


VIEW MORE
story-8
150 hp to 1,250 hp: Every Corvette Generation Compared by the Specs That Matter

Slideshow: From C1 to C8 we compare every Corvette generation by the numbers.

By Joe Kucinski | 2026-05-12 16:54:12


VIEW MORE
story-9
8 Coolest Corvette Pace Cars (and Replicas) of All Time

Slideshow: Some Corvette pace cars became collectible legends, while others perfectly captured the look and attitude of their era.

By Verdad Gallardo | 2026-05-11 09:50:51


VIEW MORE