Would a 275/40 tire fit on a 20x10.5 rim?? - Mustang Evolution

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Old 04-16-2016, 10:34 PM   #1
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Would a 275/40 tire fit on a 20x10.5 rim??

Hey guys I currently have 295/30/20 nitto motivo tires on my 12 gt on kmc 20x10.5 rims. I wanted to know if I would have any kind of issues putting a 275/40 or 275/35 tire on it. I also have eibach sportline lowering springs. I was looking into getting some nt05s for better traction.

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Old 04-16-2016, 10:35 PM   #2
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Forgot to mention my offset is 35mm

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Old 04-17-2016, 12:07 PM   #3
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Yes that fit. It has a bit of a round off. I have this set up and I like it. The rounding isn't to bad. But it will fit.
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Old 04-17-2016, 12:29 PM   #4
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Would you mind posting some pictures kind sir.

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Old 04-17-2016, 12:37 PM   #5
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Would you mind posting some pictures kind sir.

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I would but don't know how to. Can you do it on the app? What app do you have also?
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Old 04-17-2016, 12:40 PM   #6
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I have the app on my android phone. When you reply there's an addition sign and you just click it and then at the top right corner it gives you options to attach files. Anyhow you said you have the 275/35 or 275/40 and your rim is 20x10.5?

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Old 04-17-2016, 12:56 PM   #7
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Hopefully this worked lol. Yes 20x10.5
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Old 04-17-2016, 01:02 PM   #8
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Yes it did. Thanks. It doesn't look bad at all. Are you lowered? Any rubbing?

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Old 04-17-2016, 01:04 PM   #9
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Yes it did. Thanks. It doesn't look bad at all. Are you lowered? Any rubbing?

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Yes. I lowered it 1.5 all around and no rubbing at all.
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Old 04-17-2016, 06:56 PM   #10
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Good to know I'll get those tires then thank you.

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Old 04-18-2016, 01:35 PM   #11
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Yes. I lowered it 1.5 all around and no rubbing at all.
Your Beast is sick, man! Sick Black Beast! LOL

I see what you mean by the rounding... doesn't look like its too bad though huh?
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Old 04-18-2016, 02:00 PM   #12
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Your Beast is sick, man! Sick Black Beast! LOL

I see what you mean by the rounding... doesn't look like its too bad though huh?
Thanks. It's not at all. I like the way it looks. I could have gotten the bigger size but decided to keep them.
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Old 04-20-2016, 09:18 AM   #13
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I wouldn't undersize with Nittos, they tend to run small as it is. Why not run the 305/30?
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Old 04-20-2016, 09:35 AM   #14
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275 wide will fit on a 10.5" rim but the rim lip will go out past your sidewall. And that is with a big 275... with a Nitto it'll be even worse. I would run at least a 295 Nitto.
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Old 10-07-2016, 04:55 PM   #15
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275 wide will fit on a 10.5" rim but the rim lip will go out past your sidewall. And that is with a big 275... with a Nitto it'll be even worse. I would run at least a 295 Nitto.
Scotty, I searched but couldn't find an answer to this. Do you know what is the largest rear tire that can fit on a Brembo rim? I have a 2014 GT with the Brembo's. Would a 275 or even 295 fit on the brembo rim? thanks.
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Old 10-08-2016, 12:59 AM   #16
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10 inch rims are best for 275-285 tires.

10.5 are best for 295-305.

If you size the too small you end up stretching the tires out and you will run into a myriad of problems.

The sidewalls are meant to offer stability. When you angle it you lose the ability of the tire to keep its structural integrity on corners and even straight line.

In corners, you will have less grip because the sidewall isn't there.

Honestly, Nitto NT555 G2 305/30/20 will be a perfect fit for your 10.5" rims and will give you max performance for your setup (short of DR or slicks).


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Old 10-09-2016, 01:21 PM   #17
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For comparison, I'm running 295/35/19's on a 10.5 in the rear. (fronts are 275/35/19 on a 9.5in wheel)

I like the twisty's as much as the straight line so I opted for 295 over a 305.

I have not been disappointed with straight line traction in the least. They grip and go.



When I bought those wheels, I spent some time doing research trying to figure out what size tires to put on them.

You can follow that journey here: 19x9.5 and 19x10.5 - Tire Options? and learn a lot in the process!

Essentially you will learn how to find the information you need from tirerack in regards to tire sizes, and use that in conjunction with a wheel/diameter calculator to find your optimal size.

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Old 10-30-2016, 06:44 PM   #18
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yep
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