Widest tire on 21” Turbine?

[Broncobren]

What is the widest tires you can fit on the stock 21” Turbines? I found a set I’m looking to buy, they currently have 245/35/21 on them. It’s a square setup so I’m assuming they are a 8.5” wide rim? My car is a 2017 MS 75D. Thanks for any input.

 

[VaztheDad]

You won't get any wider up front, as most 245s I'm finding rub slightly up front when I'm turning in reverse.

In the rear might be different if you're willing to give up the ability to rotate.

 

[Broncobren]

You won't get any wider up front, as most 245s I'm finding rub slightly up front when I'm turning in reverse.

In the rear might be different if you're willing to give up the ability to rotate.

Yeah I’m good with 245’s up front. I’d like a wider look in the rear, just not sure if I can on the 8.5” rim?

 

[VaztheDad]

8.5" you're really only good to push up to a 255 without dealing with out of spec stretch.

Here is the Pilot Sport AS sizing for example.

Shop Pilot® Sport All Season 4 Tires | Michelin

Elevate your potential in all seasons with dry, wet, and snow control. Shop Pilot Sport All Season 4 tires from Michelin built with high-performance made to last.

www.michelinman.com

Plan on aftermarket wheels if you want more rubber in the back.

 

[yamanote]

Keep in mind that the Turbines were available staggered as well (9" rear). If you want to go with wider tires would recommend finding a staggered set, I have run 275s on the 9" rear Turbine at one point.

As per above 255 is the widest recommended tire for an 8.5.

 

[Broncobren]

Keep in mind that the Turbines were available staggered as well (9" rear). If you want to go with wider tires would recommend finding a staggered set, I have run 275s on the 9" rear Turbine at one point.

As per above 255 is the widest recommended tire for an 8.5.

Thanks guys for the replies.