Tire size?
Thread Starter
Le Mans Master
Joined: Nov 2009
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From: Mo.
Tire size?
I did a search and found out you "could" run 275/40/17's on the front of a 2002 z06.
But when I call Tire rack and Bf goodrich they say you "can't". Can anyone give me a difintive answer please.
Thanks in advance guy's.
Seth
But when I call Tire rack and Bf goodrich they say you "can't". Can anyone give me a difintive answer please.
Thanks in advance guy's.
Seth
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From: I love you & miss you Linda
2017 C7 of the Year Finalist
St. Jude Contributor
You can run 275/40x17 on the front of ANY C5, when using the 17x9.5 Z06 wheel
Thread Starter
Le Mans Master
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From: Mo.
Don't quite have enough info about your specific setup to give you the short answer so this is a longer version of an answer.
If you have the OEM wheel and tire sizes presently
C5: Z06 sizes and offset.
Front 17x9.5 - 54mm - 265-40-17
Rear 18x10.5 - 58mm - 295-35-18
then you can mount a 275-40-17 tire on the front rim but you may experience some AH/TC issues due to the diameter of the new front size vs the old rear size. The OEM tire sizes had diameters of 25.3 front and 26.1 rear. The new front size has a diameter of 25.7.
The recommended delta in tire diameters is that the rears be at least 1/2 inch taller than the fronts to avoid AH/TC problems. This new setup is less than 1/2 and if the rears are worn may be closer to the size than the math above shows. I know there will be someone post here and say they run the same size tires front and rear . Some cars can get away with it but most others cannot. Your money. Buy the taller size if you want but be prepared to turn off AH/TC every time you start the car if you do.
If you have the OEM wheel and tire sizes presently
C5: Z06 sizes and offset.
Front 17x9.5 - 54mm - 265-40-17
Rear 18x10.5 - 58mm - 295-35-18
then you can mount a 275-40-17 tire on the front rim but you may experience some AH/TC issues due to the diameter of the new front size vs the old rear size. The OEM tire sizes had diameters of 25.3 front and 26.1 rear. The new front size has a diameter of 25.7.
The recommended delta in tire diameters is that the rears be at least 1/2 inch taller than the fronts to avoid AH/TC problems. This new setup is less than 1/2 and if the rears are worn may be closer to the size than the math above shows. I know there will be someone post here and say they run the same size tires front and rear . Some cars can get away with it but most others cannot. Your money. Buy the taller size if you want but be prepared to turn off AH/TC every time you start the car if you do.
Thanks for your help. And thank you to everyone else for there input.
Team Owner
Joined: May 1999
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From: Columbus Ohio
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St. Jude Donor '06-'08-'10
I have 275/40x17 with Z06 wheels on the front of my 03 convertible. No issues with traction control at all.
Thread Starter
Le Mans Master
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From: Mo.
Thanks 8vette7, this stinks,I really want the BFG's.
Out of curiosity, has anyone ran the BFG kdw2 in 275/40/17 and 295/35/18 combo on there C5 Z06?
Out of curiosity, has anyone ran the BFG kdw2 in 275/40/17 and 295/35/18 combo on there C5 Z06?
Last edited by SSTG; Nov 23, 2009 at 09:02 PM.
Race Director
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From: I love you & miss you Linda
2017 C7 of the Year Finalist
St. Jude Contributor
You will NOT have Active Handling problems by going from a 265/40 to a 275/40, believe me.
The KDW's in 275/40x17 and 295/35x18 are a perfect pairing for any C5 with 9.5 and 10.5" wheels.
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Thread Starter
Le Mans Master
Joined: Nov 2009
Posts: 5,687
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From: Mo.
Many people have run those sizes on C5's. You guys are way over thinking this whole thing here.
You will NOT have Active Handling problems by going from a 265/40 to a 275/40, believe me.
The KDW's in 275/40x17 and 295/35x18 are a perfect pairing for any C5 with 9.5 and 10.5" wheels.
You will NOT have Active Handling problems by going from a 265/40 to a 275/40, believe me.
The KDW's in 275/40x17 and 295/35x18 are a perfect pairing for any C5 with 9.5 and 10.5" wheels.
Tire rack and BFG say I cannot run this combo on my C5 Z. Again not being rude here.
Team Owner
Joined: May 1999
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From: Columbus Ohio
CI 3-4, 8-9-10 Veteran
St. Jude Donor '06-'08-'10
Thread Starter
Le Mans Master
Joined: Nov 2009
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From: Mo.
I just wanna make sure these will work with no rubbing, no fault codes or any other problems. If I get the BFG's... it's not like I can try the
275's and if they don't work go back to the 265's. They don't make them lol.
Team Owner
Joined: May 1999
Posts: 22,830
Likes: 13
From: Columbus Ohio
CI 3-4, 8-9-10 Veteran
St. Jude Donor '06-'08-'10
Some people have had problems but normally it happens when they run the same size front and rear or screw up and actually wind up with a shorter tire in the rear.
