c5 tire sizes need help
Thread Starter
Intermediate
Joined: Jan 2005
Posts: 30
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c5 tire sizes need help
i have a stock c5 convertable,i want to replace the set with 245/40/17 in front and 295/35/18 on rear my question is will the stock c5 wheels be wide enough for the 295/35/18...
Melting Slicks
Joined: Feb 2002
Posts: 3,179
Likes: 13
From: Coal Valley IL
CI 4-7, 9 & 10 Veteran
There are those that have put 295/35/18 on the 18x9.5" stock size rear rims and said that it was OK.
But, personally I wouldn't do it. I would get some 18x10.5 to go with the 295s. For the last 2 years, I ran 18x9.5/10.5 with 265/35/18 and 295/35/18. I recently changed the wheel setup and plan on selling the previous setup.
But, personally I wouldn't do it. I would get some 18x10.5 to go with the 295s. For the last 2 years, I ran 18x9.5/10.5 with 265/35/18 and 295/35/18. I recently changed the wheel setup and plan on selling the previous setup.
Safety Car
Joined: Mar 2002
Posts: 3,780
Likes: 442
From: Southwest MI
Originally Posted by Germano
i have a stock c5 convertable,i want to replace the set with 245/40/17 in front and 295/35/18 on rear my question is will the stock c5 wheels be wide enough for the 295/35/18...
the stock setup has rears 1" taller than the fronts. to keep that, i'd do 255-40-17 F 25.1 tall; &
295-35-19 R 26.1 tall
it'll work ok on stock width rims....... i've seen it done, and the owners were happy (handling, wear, looks). the whole car will be about .3" closer to the ground tho
Last edited by 66427-450; Mar 1, 2005 at 09:42 AM.
Melting Slicks
Joined: Jun 2004
Posts: 3,439
Likes: 6
From: Newark, DE
St. Jude Donor '06
I think you'll have problems with that combination. The fronts are almost a full inch shorter (OD), and the rears are too wide for the stock (9.5") wheels. You'll probably be able to squeeze the 295's on, but the tires will bow in at the rim. You may actually wind up with less contact patch than using the stock size in the rear.
Play with some numbers, and see what the recommended rim/tire combos are, here:
http://www.1010tires.com/TireSizeCalculator.asp
Play with some numbers, and see what the recommended rim/tire combos are, here:
http://www.1010tires.com/TireSizeCalculator.asp
Le Mans Master
Joined: Jun 2004
Posts: 6,269
Likes: 50
From: Dallas Texas
St. Jude Donor '06-'07-'09-'10
Originally Posted by BW1
I think you'll have problems with that combination. The fronts are almost a full inch shorter (OD), and the rears are too wide for the stock (9.5") wheels. You'll probably be able to squeeze the 295's on, but the tires will bow in at the rim. You may actually wind up with less contact patch than using the stock size in the rear.
Play with some numbers, and see what the recommended rim/tire combos are, here:
http://www.1010tires.com/TireSizeCalculator.asp
Play with some numbers, and see what the recommended rim/tire combos are, here:
http://www.1010tires.com/TireSizeCalculator.asp
Check your numbers. I think you'll find only a .53" difference in overall height/diameter. The car will be approx. 1/4" lower.
Melting Slicks
Joined: Jun 2004
Posts: 3,439
Likes: 6
From: Newark, DE
St. Jude Donor '06
Originally Posted by sxe60
Check your numbers. I think you'll find only a .53" difference in overall height/diameter. The car will be approx. 1/4" lower.
Re-read the post. The context of my statement that you quoted was comparing the stock fronts to the proposed replacements. 245/40/17 is almost a full inch shorter than 245/45/17 (25.68" vs. 24.71").
Le Mans Master
Joined: Jun 2004
Posts: 6,269
Likes: 50
From: Dallas Texas
St. Jude Donor '06-'07-'09-'10
Originally Posted by BW1
Re-read the post. The context of my statement that you quoted was comparing the stock fronts to the proposed replacements. 245/40/17 is almost a full inch shorter than 245/45/17 (25.68" vs. 24.71").
Your figures are correct, but 66427-450 post says he wanted to use 255-40-17's, not 245-40-17's on the front which would only be about a 1/2" difference.
Melting Slicks
Joined: Jun 2004
Posts: 3,439
Likes: 6
From: Newark, DE
St. Jude Donor '06
Originally Posted by sxe60
Your figures are correct, but 66427-450 post says he wanted to use 255-40-17's, not 245-40-17's on the front which would only be about a 1/2" difference.I was answering the person who started this thread, not 66427-450. I'll use quoting in the future, to avoid confusion.
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Safety Car
Joined: Mar 2002
Posts: 3,780
Likes: 442
From: Southwest MI
Originally Posted by 66427-450
the stock setup has rears 1" taller than the fronts. to keep that, i'd do 255-40-17 F 25.1 tall; &
295-35-19 R 26.1 tall
it'll work ok on stock width rims....... i've seen it done, and the owners were happy (handling, wear, looks). the whole car will be about .3" closer to the ground tho
295-35-19 R 26.1 tall
it'll work ok on stock width rims....... i've seen it done, and the owners were happy (handling, wear, looks). the whole car will be about .3" closer to the ground tho
