New rims

[5.0christian]

So I just got new rims on my 2019 ford must gt premium they are 19x9.5 all Al round and my question is if anyone knows what the biggest I can put on in the back with keeping stock suspension? Thank you!

Sponsored

 

[m3incorp]

I assume you are asking what is the biggest tire for the rear that fits the 9.5 wheel. Tire rack says a 285/35r19 will fit. Fit and be the best application may mean two different things though. I have to ask if you were wanting to run a larger tire in the rear, why not buy a wider wheel for the rear? (It appears you don't plan to rotate tires based on wanting larger in the rear.) A 19x10, 19x10.5 19x11, etc would fit great and allow for up to 325 in the rear depending on the tire.

 

[Skye]

https://www.tyresizecalculator.com/charts/tire-width-for-a-wheel-rim-size-chart

I've referred to the following several times. Might be of help.

BTW, you mentioned 19x9.5. What is the offset?

 

[WItoTX]

As big as the tire shop is willing to stick on there. A 9.5 might be good for most 255/265's. I generally don't get tires that vary more than a half inch from rim size.

What are you looking to do??? It would change what I suggest.

 

[Dave2013M3]

On a 9.5" wide wheel I wouldn't go beyond a 275 width. Yes a 285 fits but it wont be optimal. I would run a 275/35/19 all around.

 

[DRAGOON]

Do some reading here. Knowledge is power.
https://motoiq.com/how-to-properly-select-and-size-tires-for-performance/

 

[kluke15]

i had 285s on my 9.5 and they bulged a bit. 275 looks much better imo

 

[MAGS1]

Do some reading here. Knowledge is power.
https://motoiq.com/how-to-properly-select-and-size-tires-for-performance/

^^this is a great article.

 

[DRAGOON]

^^this is a great article.

I found it quite informative. Billy Johnson has a expert background with a long resume of track racing and mustang knowledge.

 

[MAGS1]

I found it quite informative. Billy Johnson has a expert background with a long resume of track racing and mustang knowledge.

Yeah his knowledge is quite extensive. He used to post here every now and then but haven’t seen him post anything in quite some time. One of the threads I saw him in somebody was getting into a pissing match with him about wheel and tire fitment. Dude wouldn’t back down even though Billy is clearly the expert in that room. Don’t think he’s been back since.

 

[MAGS1]

OP, don’t go any wider than 275 on a 9.5” wide wheel. As others mentioned, the 285 will bulge a bit and you start to sacrifice feel as a result. 11” wide is very common for the rears with 305 or 315 being the optimal tire (can also run 325 but I feel those are better for a 12” wide wheel personally).

 

[Dave2013M3]

OP, don’t go any wider than 275 on a 9.5” wide wheel. As others mentioned, the 285 will bulge a bit and you start to sacrifice feel as a result. 11” wide is very common for the rears with 305 or 315 being the optimal tire (can also run 325 but I feel those are better for a 12” wide wheel personally).

This

 

[5.0christian]

My mechanic had ordered 305/35/19 for the rears and 265/35/19 for the front so I’m curious how that is going to look I didn’t do wider wheels in the back because I was on a budget and this was the best pair I found

On this mustang

 

[TopJimmyCooks]

Don’t do 305’s on 9.5” wheels. That’s way too big. And I’m shocked that a mechanic would do that.

 

[m3incorp]

I agree. I can't see how the mechanic would recommend a 305 on those.....that 22 offsets may be an issue also. I am not sure those wheels in the pics are made for the Mustang. As they say, pay once and cry once. Save a little longer and get what you really like.

Sponsored