Need some wheel/tire size advice

[Dave2013M3]

That is correct.... unless I go with a 275/40/19 tire....

With the 2024's the fitment is a tad different than the S550's. If you ever consider lowring the car you may have issues with a 27.7" tall tire.

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[Vapor Blue GT]

Wow... such spirited conversation... Let me see if I can clear up any confusion...
The wheels that came with the car are just OK. I looking to upgrade my wheels to a more aggressive look and a little bit wider foot print. The car will not be tracked at any time. My car is a GT Premium 401a package. No PP. I've been looking at the Savini Black Di Forza BM14 Machined Black wheels in 19x9.5 ( BM14 Machined Black - Savini Wheels ). The next size up is the 19x10.5, but I am told that size might cause some fitment issues and I don't want to go with 20" wheels. I want to do a square setup, not staggered as I don't want to have to buy 2 different tire sizes. As for the tires, I haven't decided yet, but I have always like the Goodyear Eagle F1 Asymmetric A/S. I'm looking at 275/35/19 for the tire size but wanted to get some advice/opinions from you guys since some of you have already done what I'm about to do and I just wanted to see what you guys did and see what issues, if any there would be. As always, your feedback/opinions are welcomed. Thanks guys!

I didnt realize the 401a option cars came with 255’s. Ours came with 265’s but maybe we got an option for bigger wheels and a wider tire. I’d have to look at our sheet.

Edit…. Never mind it was an option with our car. Happy to see this thread as wheels and tire fitment have never been easy for me to understand. This will be a good reference for others to see in the future

 

[bloodybobber]

I'm looking to upgrade my current setup which is the silver wheels that come on the GT Premium (see picture of my car to the left) I'm looking to get a little bit wider stance. I'm looking at either a 19x9.5 or 19x10.5 wheel with a square setup, not a staggered setup. Which one would fit better and not have to worry about any issues like rubbing. What would be the best over all tire size? I was thinking 275 all the way around or is that too big would 265 be better. Keep in mind that I don't want to make the car look weird but do want a more aggressive stance without changing the handling or drive characteristics. Your advice would be greatly appreciated.

Dark Horse performance pack comes with 305s on the front and 315s on the back on 10 and 10.5 I think

 

[Dave2013M3]

Dark Horse performance pack comes with 305s on the front and 315s on the back on 10 and 10.5 I think

10.5" front and 11" rear

 

[roadpilot]

Dark Horse performance pack comes with 305s on the front and 315s on the back on 10 and 10.5 I think

P305/30R19 on 19x10.5 on the front and P315/30R19 on 19x11 on the rear.

 

[SteveinKG]

For a square setup we can meet right in the middle a 19x10 all around with a 285/35/19 on all four corners !

With this set up, there will be no mods needed, correct? Like the OP, I am looking for something with an aggressive stance and the widest tires I can possibly get. Mine is a 24 GT performance w/Brembo's. The tires/rims that came with it are: 255/40R19 W-RATED TIRE
19X8.5 SHADOW SILVER-PTD ALUM.

 

[Project6GR Wheels]

With this set up, there will be no mods needed, correct? Like the OP, I am looking for something with an aggressive stance and the widest tires I can possibly get. Mine is a 24 GT performance w/Brembo's. The tires/rims that came with it are: 255/40R19 W-RATED TIRE
19X8.5 SHADOW SILVER-PTD ALUM.

Correct ! no mods needed at all for this setup 19x10 285 all around is a direct bolt on if you are looking for something more aggressive we recommend 19x10 19x11 285/325

 

[decidave8]

What is the widest tire you can fit on the stock 19 in wheels that came on the non PP car

 

[Dave2013M3]

I wouldn't go beyond what it came with. Most of the OEM 19" wheels are 8.5" wide and the 255 tire is as wide as I would go.

 

[AZ_Ryan]

What is the widest tire you can fit on the stock 19 in wheels that came on the non PP car

Assuming you have either of the non PP GT wheels, I wouldn't go wider than the 255/40s that are on there. Those rims are only 8.5" wide.

Edit: sorry for the redundant post Dave.

 

[AZ_Ryan]

This I don't know... I was speaking with a vendor who sells these and was advised that the 10.5 would cause fitment issues taking into account that I would be putting a 285 size tire on it. Since I want a square setup, it was recommended that I go with 19x9.5.

Offset is a huge part of the equation. If you don't know, then you can't really make an informed decision and it's tough to offer guidance. See if you can find out.

I'm going to echo what many others have already said. 10" is the sweet spot for a squared set up if you want to go wide. Since your wheels are not available in 10", then I would go 9.5". Visually, I doubt you'll be able to tell much difference (again depending on offset).

These cars can have significant "tire poke" on the front fenders with 10.5" rims (depending on offset). In other words, the tire extends out beyond the fender line and isn't flush. The Mach 1s had fender flares just for that reason. Note also, that the 10.5" front HP wheels on those cars have a good amount of negative offset to clear the brakes.

Keep in mind also that suspension geometry can be effected when going with a much wider tire and rim, and/or spacers. For that reason, I personally wouldn’t go past 10". Especially if you arent traking the car. Just my 2 cents. Hopefully that helps.

 

[VELGEN WHEELS]

Offset is a huge part of the equation. If you don't know, then you can't really make an informed decision and it's tough to offer guidance. See if you can find out.

I'm going to echo what many others have already said. 10" is the sweet spot for a squared set up if you want to go wide. Since your wheels are not available in 10", then I would go 9.5". Visually, I doubt you'll be able to tell much difference (again depending on offset).

These cars can have significant "tire poke" on the front fenders with 10.5" rims. In other words, it extends out beyond the fender line and isn't flush. The Mach 1s had fender flares just for that reason.

Also keep in mind also that suspension geometry can be effected when going with a much wider tire and rim, and/or spacers. So if you aren't going to track the car, I personally wouldn’t go past 10". Just my 2 cents. Hopefully that helps.

Well said. You are correct, most of the guys out there running a squared setup are doing a 10" wide with a 285 or 275.

 

[Dave2013M3]

Assuming you have either of the non PP GT wheels, I wouldn't go wider than the 255/40s that are on there. Those rims are only 8.5" wide.

Edit: sorry for the redundant post Dave.

No worries!!

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