Largest rear tire that can fit on a 2025 GT Mach E

[Johnny_b]

Largest rear tire that can fit on a 2025 GT Mach E with or without spacers on factory rims

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[markboris]

Largest rear tire that can fit on a 2025 GT Mach E with or without spacers on factory rims

The GT wheel is 8" wide. You have a 245/45R20 tires on there now and one size up, 255/45R20 is the largest recommended by manufacturers for an 8" wheel width. No spacers would be needed to just go up one size. If you want to go wider/larger, you would need to change your wheels to a larger size.

 

[markboris]

I maybe should have mentioned, if you do want to go with larger wheels like 20x10.5's then 295/40R20's will work and fit in the rear.

 

[Johnny_b]

Really trying to not replace the rims. I was hoping to get a 275 on the rear and a 255 or 265 on the front. Not sure if I would need to install a 10mm centric spacer to make sure it doesn’t hit the suspension inside. If I can only get away with a 265 so be it.

 

[markboris]

Really trying to not replace the rims. I was hoping to get a 275 on the rear and a 255 or 265 on the front. Not sure if I would need to install a 10mm centric spacer to make sure it doesn’t hit the suspension inside. If I can only get away with a 265 so be it.

I assume you are going for width and not height on the tires, correct? If so, 255/45's are the widest recommend for an 8" wheel. Now, I have seen people go one size up or down from the recommended so 265's would probably be ok but not sure what you would gain if the tire is not completely flat on the road because of not being on the proper size wheel.

As far as spacers go, with the OEM 8" wheels, you would not need a spacer on the rear no matter what size tire you put on even if it was a 275 (highly not recommended on an 8" wheel though). Now on the front, with the OEM 8" wheel having a 47.5 offset, 255's would fit without needed a spacer. If you went with 265's, the inner tire sidewall would be right up against the strut so a thin 3mm spacer on the existing hub would be enough to keep it from rubbing against the strut.

I have aftermarket wheels and runs 275's on the front with 9.5" ET40 wheels. Rear you can run much wider up to 315's on an 11" wheel if you don't mind a bit of a poke, otherwise 295's is the widest I would go. I have run those sizes on several Mach-E's.

 

[Johnny_b]

Thanks for the info. Don’t think the 4,000 for the rim upgrade would be for me. This is a spare car.

The wheels you mentioned are amazing and bad ass. Is there another brand that would gives similar look at a cost savings? I have the bronze package and like the colors but open to black.

 

[markboris]

Thanks for the info. Don’t think the 4,000 for the rim upgrade would be for me. This is a spare car.

The wheels you mentioned are amazing and bad ass. Is there another brand that would gives similar look at a cost savings? I have the bronze package and like the colors but open to black.

Atomic Wheels are a very good forged aluminum wheel at a discounted price. Some shots of Steve's (HuntingPudel) car with black Atomic Wheels
https://www.macheforum.com/site/thr...h-e-by-atomic-wheels.31815/page-4#post-758610

Ali (AliRafiee) has some really great looking wheels and they are in a bronze finish. Maybe hit him up to see how much they cost:
https://www.macheforum.com/site/thr...-info-specs-opinions.28097/page-3#post-829628

 

[Johnny_b]

Amazing and thank you! Love the blue!

 

[louc757]

I have a 2023 GTPE and ran 255/45R20 square on the factory wheels with no spacers or issues. I bought the Savini SV-F5 wheels for about $2700 in a staggered setup. Not quite the price of forged wheels, but not cheap either.

Front
20x8.5 Tires 255/45R20

Rear
20x10 Tires 285/40R20

No spacers and no rubbing. Just bolt them on and have fun. I like look of a wide rear tire. I hadn’t noticed and decrease in range, but I used the Pirelli PZero A/S EV Tuned for BMW i7 so that may have helped. I primarily use use it to commute back and forth to work (40 mile roundtrip) and don’t drive long distances with it.

 

[Johnny_b]

Very cool!

The wheel combo looks prefect! What size rims?

Also anyone have a economical tire solution with those sizes. I’m not really interested any super grippy tire I would like to have more longevity.

 

[louc757]

Very cool!

The wheel combo looks prefect! What size rims?

Also anyone have a economical tire solution with those sizes. I’m not really interested any super grippy tire I would like to have more longevity.

Front Wheels are 20 x 8.5
Rear Wheels are 20 x 10

Those sizes accommodate the 255 and 285 perfectly.

 

[Johnny_b]

Thanks for the info.
Good place to buy wheels? would like bronze to match the OEM.

Saw a few posting but they where 4000 for the set. Was hoping to find some forged in the twos.

 

[markboris]

Thanks for the info.
Good place to buy wheels? would like bronze to match the OEM.

Saw a few posting but they where 4000 for the set. Was hoping to find some forged in the twos.

I mentioned before to check out Atomic Wheels. Forged at a good price.

 

[Johnny_b]

Thank you.

If I want to run a 265 front and a 295 back on a 20 what’s the off set needed to clear and and would this be a 10.5 rear and 8.5 front?

I’m just not the familiar with cars like I am bikes.


When you speak with the wheel company’s can get a straight answer.

 

[markboris]

Thank you.

If I want to run a 265 front and a 295 back on a 20 what’s the off set needed to clear and and would this be a 10.5 rear and 8.5 front?

I’m just not the familiar with cars like I am bikes.


When you speak with the wheel company’s can get a straight answer.

I assume you read some of the information I posted on my thread of staggered setups?
https://www.macheforum.com/site/threads/my-staggered-wheel-tire-setups-info-specs-opinions.28097/

You can run two different 265/295 staggered setups and I have run both. Either 265/45R20 F, 295/40R20 R which have a height about 1/2" taller than the OEM tires and NOT recommended if you are going to lower the car. Or 265/40R20 F, 295/35R20 R which have a height about 1/2" lower than the OEM tires. The 45/40 setup gives you a taller sidewall than OEM which will allow you to lower the tire pressures to 33 F/31 R improving the ride but lessening the range and handling slightly. The 40/35 setup gives you are shorter sidewall than OEM which will still allow you to lower the tire pressure a bit, 38 F/36 R but but because of the shorter sidewall may increase harshness of the ride but it will improve the handling a bit.

With 265/295 tire sizes, the ideal width's for your wheels should be between 9"-9.5" F, 10"-10.5" R. The offset will depend on how you want the wheel/tires to look on your car. I assume you want both the front and rear wheel/tires to have the same exact fitment meaning how far the wheel/tire sticks out (poke) or sits in (sunken in). You first have to start with the rear wheel/tire since it is the widest. You want the rear wheel/tire to be in as far as it can go without contacting suspension parts. Plus it needs room to articulate when the car is moving up and down in the rear when loaded with people/cargo going over bumps. With a 295 tire on a 10"-10.5" wheel, an offset of 45 is really safe. While the tire will not contact any suspension parts, it may contact the inner fender liner just barely but that can be pushed back and secured or trimmed out.

With a 45 offset in the rear, the front would need an offset of around 32 for the 265's on a 9"-9.5" wheel to match the poke of the rear so they they have the same fitment. The rear 10"-10.5" ET 45 wheels with 295's will poke out from the fender trim moulding at the top about 1/8"-1/4" depending on the negative camber setting. You can have it fit flush if you had a -2 camber setting but that is a little much. Most camber settings for the rear are between -1 to -1.5 which will give you the 1/8"-1/4" poke. So, the offset of 32 in the front matches this 1/8"-1/4" poke and will also depend on the front negative camber setting just like the rear. You may not want the front to have the same fitment in the rear which pokes out a bit and may want it to sit in a bit more. This all depends on the look you are going after. With that said, you can go with an offset in the front up to 40 allowing the wheel/tire to move back 8mm, about 3/8". Can't go anymore than an offset of 40 in the front otherwise depending on your camber, the back side of the tire could contact the strut.

By the way, the front camber is not adjustable from the factory like the rear and to make it adjustable is very easy. You need to purchase and adjustable camber bolt set and replace the splined top strut to wheel knuckle bolt on each side with the adjustable camber bolt.

My '21 Premium 265/45-295/40 setup

My '21 GTPE 265/45-295/40 setup

My '21 GTPE 265/40-295/35 setup

Chris's '22 GPE 265/40-295/35 setup (previous setup off my '21 GTPE)

Joe's '24 GTP 265/45-295/40 setup (previous setup off my '21 Premium)

Adjustable camber bolt kit for front.
https://www.amazon.com/dp/B000CB3QUI?ref_=ppx_hzsearch_conn_dt_b_fed_asin_title_1

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