Mach-E 2021/22 Wheel Sizes, Bolt Patterns, Offset, Center Bore, Load Rating, GVWR [Table]

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Mine does say 18x7, but that just seems low based on what I could measure. Those rims must be pretty thick along the edges.

Thank you for checking that, and also measuring earlier! That does seem odd, yeah. Also surprising the a couple places online also show it at 8". Trust but verify I guess...

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[Mach-Lee]

Mine does say 18x7, but that just seems low based on what I could measure. Those rims must be pretty thick along the edges.

Yes, you can't really measure it properly unless you take the tire off the wheel. It goes by the inside dimension:

 

[HuntingPudel]

The tire pressure that is on the car’s sticker is the pressure at which the maximum load rating is valid for the OE tire/wheel combination. It is not your normal running pressure. Your normal running pressure will be something below the number on the sticker, depending on temperature, load, etc.

 

[Mach-Tony]

The tire pressure that is on the car’s sticker is the pressure at which the maximum load rating is valid for the OE tire/wheel combination. It is not your normal running pressure. Your normal running pressure will be something below the number on the sticker, depending on temperature, load, etc.

I was just at the shop and their notes say "inflate tires to MFR spec of 39 psi" for their to-dos. So are you saying that they are overinflating?

 

[HuntingPudel]

Probably a little, unless your MME is at its max GVWR.

 

[Mach-Lee]

I was just at the shop and their notes say "inflate tires to MFR spec of 39 psi" for their to-dos. So are you saying that they are overinflating?

Inflating to the door sticker psi is standard practice, I wouldn't call that overinflating.

What HuntingPudel is getting at is that the door sticker pressures are what's required when the car is at maximum load (GVWR). If you're not at max load then you don't need as much pressure. Most people have no idea to think of inflating or deflating their tires every time they carry extra people or a load, so it's a good practice to just inflate to the sticker pressure for max load and not worry about it further. It's 100% safe to inflate to the door sticker psi though (checked cold of course).

 

[AZBill]

Yes, you can't really measure it properly unless you take the tire off the wheel. It goes by the inside dimension:

I understand how it is specified. I measured just under 9 inches from outside to outside of the rim. 7 inches inside is a big difference, and that picture is obviously not scaled like the actual wheels on my car.

 

[phidauex]

Updated w/ GT PE tire specs, some suspected info on Summer Tires option.

EDIT: Regarding widths, I suppose all of Fords documentation could be wrong, but I suspect it is just that these rims have very thick bead seats. I think “J” profile beads are at least half an inch thick and can be thicker. Will be interesting when someone measures with the tire off.

Regarding pressures, the door sticker pressure is a totally reasonable pressure for this car - these tires are all “XL / Extra Load” tires which are so labeled because they get a higher load rating at higher pressures. 39psi seems high, but it is because the tire is of a different design than most cars. You can experiment with a bit higher or lower depending on conditions, but I wouldn’t go to the 30/32 psi used on your last car because that would be way too low for the XL rated tires.

 

[AButtonMasher]

This information is awesome. Thank you for aggregating all of this together. One question. Wheel caps size? I want to track down black ones for GTPE wheels for when the damn car gets here.

 

[EELinneman]

Inflating to the door sticker psi is standard practice, I wouldn't call that overinflating.
Most people have no idea to think of inflating or deflating their tires every time they carry extra people or a load,

I can see it now. You are taking some people at work out to lunch and look at the "big" girl and make some comment about tire inflation....yeah, that's going to work out well. LOL

 

[EELinneman]

Just curious - do you mean you need to order the GTPE, or the GTPE wheels? I am curious because I ordered a Premium AWD and want to but the GTPE wheels on mine. So if you find a way to order the wheels, can you post it? I am definitely doing that. I assumed I would have to buy they off eBay after people start switching out wheels.

https://parts.ford.com/shop/en/us/wheels-and-tires/wheel-parts/wheel-13888331-1

 

[sharkcom]

Yeah i ordered my GTPE back in May. I am replacing the wheels and tires asap. Hoping to get a clean swap as soon as i pick up the car but I haven't ordered my new wheels yet because no one seems to know the offset on the GTPE. They will most likely be going up for sale as soon as I get my car!!!

I would be interested in buying your GTPE wheels as well so please message me when you get it. What is your delivery date?

 

[Dear1nc]

I would be interested in buying your GTPE wheels as well so please message me when you get it. What is your delivery date?

Unfortunately I don’t even have a build date yet! Something about the allocation in my area. It’s absolutely ridiculous!

 

[sharkcom]

Unfortunately I don’t even have a build date yet! Something about the allocation in my area. It’s absolutely ridiculous!

Ugh! Sorry to hear but hopefully you will soon.

 

[Mach 5e]

Wow, so much info yet very little definitive on a wider wheel on a non GT.

I have the Premium with 19x7's I live in Honolulu and the roads are terrible and slow so I want to go 18x8 with a 245-45-18. for more sidewall and tread width. The load @ 1764 lbs. is adequate.

I'm assuming: Rotiform Forged 18x8's ~ 45mm offset (should not cause any clearance issues) and a 245 tire with the same 26.6" O.D.

Any first hand knowledge or opinions would be greatly appreciated.

Devon

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