Correct tire size
Thread Starter
Safety Car
Joined: Mar 2007
Posts: 4,688
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From: Blairsville , Georgia
Correct tire size
I have a 70 convertible with 225/70/R15 tires on it. Is that the correct size tire that was original to the car when new. if not what is the correct size?
Thanks
Thanks
Racer
Joined: Sep 2003
Posts: 264
Likes: 20
F70 x 15 bias - ply nylon cord tires were original equipment.
In today's radial sizing, the replacement is P215/70R15.
Many owners run P225/70R15's because they fill out the wheelwells better and they like that appearance.
When deviating from the original size, some cars will experience rubbing problems, either in the front fender lips or the rear of the front wheelhouse.
In today's radial sizing, the replacement is P215/70R15.
Many owners run P225/70R15's because they fill out the wheelwells better and they like that appearance.
When deviating from the original size, some cars will experience rubbing problems, either in the front fender lips or the rear of the front wheelhouse.
Team Owner
Joined: Sep 2006
Posts: 31,283
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From: Westminster Maryland
Hi djd,
As hipo said the original tires were F70-15.
They were about 27" tall, had a section width of 8.35", and a tread width of 6.25".
Comparing these dimensions to the dimensions of new tires you're considering will give you a good idea of how the new tires will fit and look.
Regards,
Alan
As hipo said the original tires were F70-15.
They were about 27" tall, had a section width of 8.35", and a tread width of 6.25".
Comparing these dimensions to the dimensions of new tires you're considering will give you a good idea of how the new tires will fit and look.
Regards,
Alan
Team Owner
Joined: Jul 1999
Posts: 26,545
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From: Huntersville NC
This tire size calculator lets you compare tire sizes and dimensions both numerically and visually.
http://www.miata.net/garage/tirecalc.html
http://www.miata.net/garage/tirecalc.html
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I run 225/70/15 BFG on my 68 on Rally wheels.
Looks great and fills the well w/o any rubbing issues.
Marshal
Looks great and fills the well w/o any rubbing issues.
Marshal
Burning Brakes
Joined: Mar 2022
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255/60/15 is what I run, and it is a very popular size amongst the C3 Corvette crowd. Nice fat tire with a 27" diameter to fill out those wheel wells. Plus, running the same size on all four corners allows you to rotate. You wouldn't want the original tires that this car came with. Even the largely truck/SUV tires that you buy for these Vettes today are vastly superior to the original nylon units.
This topic is discussed ad-infinitum almost daily, OP. If you want to see what these sizes look like, do a search on the forum. You'll come up with a bunch of hits.
This topic is discussed ad-infinitum almost daily, OP. If you want to see what these sizes look like, do a search on the forum. You'll come up with a bunch of hits.
Last edited by Corvette-ZL1; Nov 9, 2023 at 09:54 AM.
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