Spare tire size

Grifter · Jan 10, 2015

My car is nearing completion and I bought a restored jack and rim to use for a spare tire. The car has 225/60/15 BF Goodrich Radial T/A's on it now but the restoration guy said the trunk won't close if I use that same size tire as a spare.

He suggested getting the same T/A tire but in 205/60/15, but he isn't 100% sure if that tire will fit either.

The rims are 15x7 rally rims, does anyone know what size BF Goodrich T/A tire I should use as a spare and not have any problem with the trunk hinge hitting the tire?

Thanks

Garfields Maro · Jan 11, 2015

hmm, I find that hard to believe. Is it a convertible ? Shouldn't be a problem if it's a coupe...

Ideally, you want about the same overall diameter as the rest of the tires. Here's a chart showing T/A dimensions and specs....http://www.bfgoodrichtires.com/tire-selector/name/radial-t-a-tires#techspecs

Grifter · Jan 11, 2015

It's a coupe, I suppose we could take a tire off the car and bolt it into the trunk and see if the trunk hinge clears the tire.

I guess the restoration guy is concerned because the 225/60/15 tires are wider then the stock 205/70 tires I think came on the car stock.

The tire might also sit higher in the trunk because the tire sits on top of the jack to hold it down

67Rally · Jan 11, 2015

225/60/15 is 25.6" tall.

You could go with a 185/70/15 @25.2" tall or a 195/70/15 @25.8" tall.

The 195 will be 30mm or about 1.2" narrower than the 225. The 185 will be 40mm or about 1.6" narrower than the 225.

Grifter · Jan 11, 2015

67Rally said:
225/60/15 is 25.6" tall.

You could go with a 185/70/15 @25.2" tall or a 195/70/15 @25.8" tall.

The 195 will be 30mm or about 1.2" narrower than the 225. The 185 will be 40mm or about 1.6" narrower than the 225.

I was going to go with 195/70/15 but I don't think BF Goodrich makes T/A's in that size, atleast not that I can find. To get that size I think I would have to goto a 14 inch rim.

john68 · Jan 11, 2015

Clamp it down with the j-bolt thru a lug nut hole insted of the center hole moving the tire over a couple inches?

4z28s · Jan 12, 2015

I had a BFG T/A, size 235-60-15 on a 15x6 rally wheel as a spare in my 1969 Camaro for many years. It fit fine in the trunk with no problems.

Grifter · Jan 12, 2015

Hey, thanks for the info, did you have it bolted down through the middle of the tire or through one of the lug nuts? Did you also have the jack underneath it?

4z28s · Jan 12, 2015

I had it bolted down thru the hub hole in the middle of the wheel and had the jack underneath it.

Garfields Maro · Jan 12, 2015

I need to get a taller spare, but this is a 205/60 x 15.

As you can see, there's no chance of interference with the hinges. Only problem I know of is bumping speakers in the rear deck...

Grifter · Feb 24, 2015

Here is the what it ended up looking like.

Tire is a BFG 225/60/15 on a 15x7 rally rim.

Spare tire size

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