C5 wheels on a C4?
Thread Starter
Burning Brakes
Joined: May 2009
Posts: 1,014
Likes: 7
From: Ft Wayne IN
C5 wheels on a C4?
I just purchased a set of C5 wheels 17/18" for My 92 C4. From what I have read the offset should work fine.
I assume I will want to run 275/40/18" on the rears. Will those be exactly 1" larger dia. than my 275/40/17's and how much will that effect final drive ratio/speedo?
My main question is what is the idea size for the 17x 8.5" fronts give it the correct rake? Thanks! Any Pic's of the combo's would be much appreciated.
On a side note My current rim/tire combo in my avaitr/pic will be up for sale to fund some new tires. They are C6-z06 motorsport rims in C4 offsets 17X9.5 all 4. They are black with machined face and chrome bolts around the paremeter. The tires are Goodrich 9/32 front and 7/32 rear. the wheels were put on about 1,500 mi ago and are almost the cond. when bought new. I will post a add in the sale section thanks.
I assume I will want to run 275/40/18" on the rears. Will those be exactly 1" larger dia. than my 275/40/17's and how much will that effect final drive ratio/speedo?
My main question is what is the idea size for the 17x 8.5" fronts give it the correct rake? Thanks! Any Pic's of the combo's would be much appreciated.
On a side note My current rim/tire combo in my avaitr/pic will be up for sale to fund some new tires. They are C6-z06 motorsport rims in C4 offsets 17X9.5 all 4. They are black with machined face and chrome bolts around the paremeter. The tires are Goodrich 9/32 front and 7/32 rear. the wheels were put on about 1,500 mi ago and are almost the cond. when bought new. I will post a add in the sale section thanks.
Drifting
Joined: Dec 2007
Posts: 1,647
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From: Argillite KY
Those are the same wheels I have and I'm running 275/40-17's on the front and 295/35-18's on the rear. They fit perfectly. I just got new tires and they are right on with the speedometer. When my speedo says 70 so does my GPS.
Race Director
Joined: Oct 2005
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From: Rolla Missouri
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If you want to keep the new tires as close as possible to the OD of your original, then look for 275/35-18
Current tire: 275/40-17 = Approx. 25.7" Diameter
New tire: 275/35-18 = Approx. 25.6" Diameter
The 295/35-18 that 1963SS mentions would also work and have a diameter of Approx. 26.1"
So, you can see it is slightly taller tire.
Current tire: 275/40-17 = Approx. 25.7" Diameter
New tire: 275/35-18 = Approx. 25.6" Diameter
The 295/35-18 that 1963SS mentions would also work and have a diameter of Approx. 26.1"
So, you can see it is slightly taller tire.
Drifting
Joined: Dec 2007
Posts: 1,647
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From: Argillite KY
Dang RollaMo
Great minds think alike
1995 Corvette LT4
1989 Silverado Z71, LT1
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and I trump you a :
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You'd better get on the ball and buy one
1996 Corvette - LT4
2000 Chevy Silverado
2011 Harley Davidson FLHX Street Glide
2000 Chevy Silverado
2011 Harley Davidson FLHX Street Glide
1995 Corvette LT4
1989 Silverado Z71, LT1
2005 Road King
and I trump you a :
1995 Impala SS
You'd better get on the ball and buy one
Drifting
Joined: Oct 2005
Posts: 1,916
Likes: 48
From: Angier nc
Been running C5 wheels for years now.Run the stock C5 rear(275/40/18) and the stock C4 front(255/45/17).My car has 4.10 gears so the taller tire doesent bother me.
Mine has been lowered also so I like to stay with the stock front size as the C5 front(245/45/17)would put me lower even more.
Mine has been lowered also so I like to stay with the stock front size as the C5 front(245/45/17)would put me lower even more.
Drifting
Joined: Dec 2007
Posts: 1,647
Likes: 4
From: Argillite KY
The 295's on the rear of mine (Conti DW's) are all that will fit without sticking out beyond the top of the wheel opening. I believe that the size tire that will fit is based somewhat on the manufacturer. Here is a pic of 315 Sumitomo's stacked beside 315 Goodyears. I would think that the Sumi's would fit and the Goodyears......not so much.
You would think that the sizes would be identical based on the math required to size a tire. Maybe Japanese math is different.
You would think that the sizes would be identical based on the math required to size a tire. Maybe Japanese math is different.
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Instructor
Joined: Jul 2011
Posts: 241
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From: Tampa FL
I know this is an older post. But I am hoping it will cover what I want to know without starting a new thread.
I would like to keep the 17 inch wheels on my 1995. Could I buy 4 of the front c5 rims and place them at all four wheel locations and keep the same tire sizes?
Thanks
I would like to keep the 17 inch wheels on my 1995. Could I buy 4 of the front c5 rims and place them at all four wheel locations and keep the same tire sizes?
Thanks
Safety Car
Joined: Jan 2004
Posts: 3,783
Likes: 15
From: Northern California
The C5 Wagon wheels are 17x8.5 Front 18x9.5 Rear.
The C5 Thin Spoke wheels are 17x8.5 Front 18x9.5 Rear.
The C5 ZO6 wheels are 17x9.5 Front 18x10.5 Rear.
So, you could use any 9.5" Front or Rear wheel on all four.
.
The C5 Thin Spoke wheels are 17x8.5 Front 18x9.5 Rear.
The C5 ZO6 wheels are 17x9.5 Front 18x10.5 Rear.
So, you could use any 9.5" Front or Rear wheel on all four.
.
Last edited by GKK; May 11, 2014 at 02:46 PM.
Instructor
Joined: Jul 2011
Posts: 241
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From: Tampa FL
Sorry if the questions are silly. Just want to stick with the 17 inch rim.
Safety Car
Joined: Jan 2004
Posts: 3,783
Likes: 15
From: Northern California
The 275/40 tire mounted on a 8.5" wheel will be squeezed a little more and the sidewall will have a slight bulged look.
The 275/40 tire mounted on a 9.5" wheel will have a proper fit and the tire sidewall will have a flush look.
It's like a person with a 45" waist trying to fit in 40" waist pants!...It might fit but, won't look quite right!...
Instructor
Joined: Nov 2014
Posts: 163
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From: polk city fl
DIGGING up old threads,,,,new to me...lol
""""Quote:
Originally Posted by BucfanTitan View Post
Could I buy 4 of the front c5 rims and place them at all four wheel locations and keep the same tire sizes?
Thanks
Yes...
Yes but bear in mind the C5 fronts are 8.5 inches wide and the stock 17's(rears at least) were 9.5 wide.You are giving up a little width but it will work fine......."""""
So based on that logic,,,,I can rotate my stock sawblades (to get more miles out of them) , staggered, and it will be ok,,,will look funny to the trained eye,,,,but I wont be able to take on/off (circle) ramps as fast due to losing 1" width in the rear....lol...or maybe I can since I'll have 1" more in the front to grab??..
....
....
I have yet to see a post about rotating sawblades,,,,,
Originally Posted by BucfanTitan View Post
Could I buy 4 of the front c5 rims and place them at all four wheel locations and keep the same tire sizes?
Thanks
Yes...
Yes but bear in mind the C5 fronts are 8.5 inches wide and the stock 17's(rears at least) were 9.5 wide.You are giving up a little width but it will work fine......."""""
So based on that logic,,,,I can rotate my stock sawblades (to get more miles out of them) , staggered, and it will be ok,,,will look funny to the trained eye,,,,but I wont be able to take on/off (circle) ramps as fast due to losing 1" width in the rear....lol...or maybe I can since I'll have 1" more in the front to grab??..
....
....I have yet to see a post about rotating sawblades,,,,,
