Recommended Tire Size for my '74 ?
10-19-2011, 11:33 AM
#1
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Recommended Tire Size for my '74 ?
Hi, my vette current has really old BF Goodrich tires with size GR60-15. I noticed that the factory sticker on the door says recommended tires for the set are GR70-15. What do you guys recommend?
10-19-2011, 11:41 AM
#2
The current tire size for stock replacement would be 225/70x15
10-19-2011, 05:33 PM
#4
Team Owner
The stock tire size was either F7015 (aka, 215R70-15) or G7015 (aka, 225R70-15). Most folks like the look of a wider tire, but with a shorter 'profile', like the 235R60-15. That size tire has a nearly identical diameter to the stock tire...so that the speedo calibration is not effected. Also, the 235 width can operate without any rubbing on any year C3.
10-19-2011, 09:43 PM
#6
Team Owner
I have a '71 with 235R60-15's and no problem at all. They fill the wheelwell out to the edge with nothing 'hanging out' to throw cr@p all over the paint. Anything wider would be risky. You can go wider on the rears, if you have big HP; but then you have trouble rotating them with the front tires.
P.S. If you have a Sam's Club membership, you can order BF Goodrich T/A Radials (white letter tires) and have them shipped to your local store. They are about as low a price as you can find for them...and they have a nice 'free' lifetime rotation and balance package that you can add when you buy them there.
P.S. If you have a Sam's Club membership, you can order BF Goodrich T/A Radials (white letter tires) and have them shipped to your local store. They are about as low a price as you can find for them...and they have a nice 'free' lifetime rotation and balance package that you can add when you buy them there.
10-20-2011, 10:37 AM
#7
The problem with putting really wide tires (like a 255/60R/15) on that puppy would include "tramlining". That's where the tires try to follow any grooves in the road, and you are constantly feeling a "pull" or lead left and right, on the crummy roads we have here in New Jersey.
The steering "feel" is better and nicer with the 225/70 or 235/60 series tires, IMHO.
The steering "feel" is better and nicer with the 225/70 or 235/60 series tires, IMHO.
10-20-2011, 01:16 PM
#8
Team Owner
The problem with putting really wide tires (like a 255/60R/15) on that puppy would include "tramlining". That's where the tires try to follow any grooves in the road, and you are constantly feeling a "pull" or lead left and right, on the crummy roads we have here in New Jersey.
The steering "feel" is better and nicer with the 225/70 or 235/60 series tires, IMHO.
The steering "feel" is better and nicer with the 225/70 or 235/60 series tires, IMHO.
Last edited by Paul L; 10-20-2011 at 01:49 PM.
10-21-2011, 02:00 AM
#10
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Im running 255 60all around and in lowered about 2 in in the front with no rubbing at all..
I seem to have a great ride with the 255s...
I seem to have a great ride with the 255s...
10-22-2011, 08:01 AM
#12
225/70
Width 8.86in
Overall height 27.4in
Sidewall height 6.20in
235/60
Width 9.25in
Overall height 26.10in
Sidewall height 5.55in
Speedo correction of 2.74 MPH at 55 (from stock 225/70)
255/60
Width 10.04in
Overall height 27.05in
Sidewall height 6.02in
Speedo correction of .72 MPH at 55 (from stock 225/70)
http://www.dakota-truck.net/CGI-BIN/TireCalc.cgi
Width 8.86in
Overall height 27.4in
Sidewall height 6.20in
235/60
Width 9.25in
Overall height 26.10in
Sidewall height 5.55in
Speedo correction of 2.74 MPH at 55 (from stock 225/70)
255/60
Width 10.04in
Overall height 27.05in
Sidewall height 6.02in
Speedo correction of .72 MPH at 55 (from stock 225/70)
http://www.dakota-truck.net/CGI-BIN/TireCalc.cgi
