Tire Size Suggestions

mach71351c · Mar 25, 2023

tpj71mach said:
Your wheel and tire combo looks great! Your paint is pretty spectacular also, did you lay it out yourself?

Thanks. A life long buddy of mine sprayed it for me.

Sparky · Apr 6, 2023

Randyi00 said:
I'll be putting new tires on the Mach 1 this spring and I'm looking for some advice. I prefer the stock old school look so I'm running 15"x 8" Magnum 500"s and BFG Radial TA's. I'm debating between 255x60, 275x60 or 295x50. I'd love to see some pictures of any of these 3 sizes on an 8" wide rim if you have it. I know that a 295 on an 8" rim is pushing it but BFG states 8"-10.5" rim width for that tire.

Hi Randy - my new magnum 500's x 8" rims are here and I am looking at the same decision - have you bought anything yet? If you have I would like to chat. Bill

Randyi00 · Apr 6, 2023

Hey Bill, I haven’t pulled the trigger on any tires yet but I think I’m going to go with a 255 on the rear. I don’t want to put 295s on an 8 inch rim and I’m not sure I have the wheel well clearance for a 275.

tpj71mach · Apr 6, 2023

mach71351c said:
Thanks. A life long buddy of mine sprayed it for me.

Your buddy did a hell of a good job on the paint!

td71mach1 · May 2, 2023

tony-muscle said:
Here is mine when I had BFC Comps. 245 on front and 295 on rear on stock wheels. The 295s will look bulgy in stock wheels but they work. The 295s fit with no issues.

View attachment 74293 View attachment 74292
View attachment 74295
View attachment 74294

Nice!
Are your all four of your wheels 15X8 with 4.5bs? Even with with those 295's on the rear?
They seem to tuck in a little more than Mister 4x4 295's on his 15x10's with 5.25bs above in post 8
even though your sidewalls seem to bulge a little more.

Did some searching and answered my questions as you have already mentioned this on several other threads.
Thanks.

I just subscribed to your build thread and started reading through the history of your mods and progress.
I recently purchased a 71 m 351c 4-speed and have aspirations to do what you have already been doing.
Thanks for the build thread and vast amount of info your providing.

I am currently on the hunt for street tires, most likely 245/60-15 on front with either 15x7 4.25bs or 15x8 4.5bs
On rear I'd like to fit 295/50-15 on 15x10 5.5-6.0bs if I can clear the fender with out rolling the lip for clearance.
Any advice on street tires would be welcome.
Love your car and upgrades, Maybe we'll meet on the track someday!

Randyi00 · May 2, 2023

Sparky said:
Hi Randy - my new magnum 500's x 8" rims are here and I am looking at the same decision - have you bought anything yet? If you have I would like to chat. Bill

Have you bought some tires yet Bill?

Sparky · May 3, 2023

No not yet - priced some through Kal but have not ordered yet - priced 245x15 front and 275x15 rear - 1200

Randyi00 · May 24, 2023

Hey Bill, I just put 275's on the rear and 245's on the front. I'm pretty happy with how it looks! Do you have your car on the road yet?

RIBS · May 26, 2023

Mine are narrower than what you are looking for…American Racing VN 501, 15x7 and 15x8, 235-60 and 245-60. 1 coil cut off front springs, lowering front 3-4 inches from stock…no issues….I got mine at Tire Rack, call their 800# they will special order what you want…cheapest price I could find….

Sparky · May 27, 2023

Finally got them mounted after looking at them in the garage for 3 months!

Sparky · May 27, 2023

Randyi00 said:
Hey Bill, I just put 275's on the rear and 245's on the front. I'm pretty happy with how it looks! Do you have your car on the road yet?

Put mine on a couple weeks back - pics attached - 245 and 275 on 15x8 magnum 500’s

Randyi00 · May 27, 2023

That's great, I look forward to seeing your car sometime!

Sparky · May 29, 2023

I found some issues with the rocker arms and am trying to iron them out. I also found a set of 1970 closed chamber heads and think I will just get the current engine running as is and start building a new one over the summer for fall installation. I will post pics once I start the build next month. Cheers!

Randyi00 · May 29, 2023

Nice, I've also got the 70 quench heads on mine.

I'd love to hear what your plan for the engine build is. I did my engine over 15 years ago and it's been great but I'd like to do it one more time and go for a few more ponies that I left sitting on the table.

torbsim · Jan 24, 2024

Hey guys I have the original 14 aluminium rims that were fitted to the Mach 1 version back in 1973, the ones with the red caps and the black ring around the rim. It's time to prepare the beauties for the summer so I'm wondering if it's possible to put 235 on there without any problems? I think there were also some from GF Goodrich with which I personally have good experience. Price-performance ratio. I think the original tyres were 205 / 60 / R14 if I'm not mistaken, but which would be the right 225? Thank you for your support.

Sheriff41 · Jan 24, 2024

torbsim said:
Hey guys I have the original 14 aluminium rims that were fitted to the Mach 1 version back in 1973, the ones with the red caps and the black ring around the rim. It's time to prepare the beauties for the summer so I'm wondering if it's possible to put 235 on there without any problems? I think there were also some from GF Goodrich with which I personally have good experience. Price-performance ratio. I think the original tyres were 205 / 60 / R14 if I'm not mistaken, but which would be the right 225? Thank you for your support.

The aluminum rim is a 6" width and E or F70 x 14 was the stock tire size, which equates to a 205 or 215/70R14. You can squeeze a 235/60R14 on the rim, but it won't look right, in my opinion. You may want to consider a 225/70R14 to fit the rim with a less squeezed look and fill out the wheel opening. If you go with a 60 series tire, you'll be running a shorter tire that doesn't fill the opening as well.

torbsim · Jan 24, 2024

Very good, I have now decided in favour of the 205 because they are as close as possible to the original. Of course, the 225 look even better, but they're just not what was sold back then. as for the background, the mustang will get a factory detal. i won't stop at the "flabby" ones

1362 · Mar 21, 2024

Maybe someone has installed 225/70r15 at the front and 245/60r15 at the rear?

Hemikiller · Mar 21, 2024

1362 said:
Maybe someone has installed 225/70r15 at the front and 245/60r15 at the rear?

225/70R15 is a very tall tire, about 27.5" in diameter depending on the brand. A 245/60R15 will be around 26". That'll be an odd looking combination.

Don C · Mar 21, 2024

torbsim said:
Very good, I have now decided in favour of the 205 because they are as close as possible to the original. Of course, the 225 look even better, but they're just not what was sold back then. as for the background, the mustang will get a factory detal. i won't stop at the "flabby" ones

The standard size tires for 429 equipped Mustangs was F70-14s. F70-15 and F70-14 were also standard on Bosses and optional on most other Mustangs. The closest width to the F series tires is 225.

The spreadsheet in this thread will give you more information on the tires and tires sizes, Scroll down to post #6 for the latest version.
https://7173mustangs.com/threads/tire-sizes.11266/

Tire Size Suggestions

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