[8262S]

I am following up on a discussion in this thread and thought it was worthy of it's own thread. It kind'a got buried and was off topic in that thread.

https://g80.bimmerpost.com/forums/sh...1933294&page=3

Does anyone run 19x9.5j ET20 square wheels with 275/35R19 tires?

It has been suggested that will not work. But no one has specifically said why.

I think they will work.

Exhibit A:
- 826M front wheel is 19x9.5j ET20 with OEM 275/35R19 tires.

Exhibit B:
- 829M rear wheel is 19x9.5j ET20 with OEM 275/35R19 tires.

Isn't that proof of the concept working?

What am I missing here? Seriously, am I missing something?

Because I am about ready to pull the trigger on some awesome wheels and don't want to be disappointed the first week of December if they don't fit. (I'm sure I'll get the new wheels before then, but nothing would be worse than everything being out of stock and me having $4K tied up in a winter set that doesn't work....)

[MassComp]

Just for clarification, is your choice between two different OEM wheels, or are you going aftermarket wheels?

[8262S]

Originally Posted by MassComp

Just for clarification, is your choice between two different OEM wheels, or are you going aftermarket wheels?

Aftermarket square set.

[pinky_chi]

I run 19x9.5" with 275/35R19 squared for track days. The wheels are ET40 so I use a 20 and 22mm spacer to bring them out a bit. I actually use the 22mm in the front because there is less inner space vs the rear. The 20mm should work in the front too but I did it this way just in case since track tires run a bit wider and there is more tire deflection at higher G's.

Your only issue with with 19x9.5" ET20 + 275/35 will be that the rear will look tucked.

[8262S]

Originally Posted by pinky_chi

I run 19x9.5" with 275/35R19 squared for track days. The wheels are ET40 so I use a 20 and 22mm spacer to bring them out a bit. I actually use the 22mm in the front because there is less inner space vs the rear. The 20mm should work in the front too but I did it this way just in case since track tires run a bit wider and there is more tire deflection at higher G's.

Your only issue with with 19x9.5" ET20 + 275/35 will be that the rear will look tucked.

Thanks.

I don't think I'll be bothered by the tuck. They should look the same as the OEM 829M winter setup.

[forcefed]

Originally Posted by 8262S

It has been suggested that will not work. But no one has specifically said why.

I think they will work.

Of course they will work, I would still prefer smaller tires for winter but that's just my preference.

[JTO24]

I run 19x9.5 et 22 square with 257/35 for winter... I kept my spacers on though (15f/12r) it works fine, with no issues; even lowered on AST springs.

[disancke]

Originally Posted by 8262S

Thanks.

I don't think I'll be bothered by the tuck. They should look the same as the OEM 829M winter setup.

fyi the OEM 829M winter package has 9Jx19 front and 9.5Jx19 rear. Totally no idea why they do this since the tires are 275/35R19 squared. But still I see no reason why a squared set won't work out and I'm planning to do so as well. Glad you brought this up and created a thread, I'd also like to see other feedbacks.

[8262S]

Originally Posted by forcefed

Of course they will work, I would still prefer smaller tires for winter but that's just my preference.

I would prefer more narrow tires for winter too but then it would be another layer of complexity trying to stay with the OEM specs, and there would be more apparent wheel tuck visual issues.

I’m not going to sweat an inch of width. I’d probably worry more about it if I had a RWD.

[8262S]

Originally Posted by JTO24

I run 19x9.5 et 22 square with 257/35 for winter... I kept my spacers on though (15f/12r) it works fine, with no issues; even lowered on AST springs.

Thanks!

What wheels are those? Got a pic from the side?

[8262S]

Originally Posted by disancke

fyi the OEM 829M winter package has 9Jx19 front and 9.5Jx19 rear. Totally no idea why they do this since the tires are 275/35R19 squared. But still I see no reason why a squared set won't work out and I'm planning to do so as well. Glad you brought this up and created a thread, I'd also like to see other feedbacks.

I too would like to know why the 829M’s are 9j front and 9.5j rear. Weird. I don’t know how that extra half inch changes the footprint of the tier.

If anything it confirms that a 19x9.5j ET20 works on the rear. Like I said above the 826M is 19x9.5j ET20 in the front.

[Kief]

Originally Posted by 8262S

Thanks!

What wheels are those? Got a pic from the side?

He is running VMR V710.
JTO24 cast or their flow form version?

[disancke]

Originally Posted by 8262S

I too would like to know why the 829M’s are 9j front and 9.5j rear. Weird. I don’t know how that extra half inch changes the footprint of the tier.

If anything it confirms that a 19x9.5j ET20 works on the rear. Like I said above the 826M is 19x9.5j ET20 in the front.

To be accurate, I won't say the sizes of 829M alone directly prove "19x9.5j ET20 works on the rear" without mentioning the front sizes as well. You can't combine the front and rear sizes of two different sets and say that works.

Nevertheless, I believe a squared set, although bmw has never officially offer any OEM squared sets, will work fine. That's why I'm also ordering a 19' squared set for my winter setup. I spent much time researching on the forum and I've seen many members with squared sets working fine, either on 19' or 20' sets.

[8262S]

Originally Posted by disancke

To be accurate, I won't say the sizes of 829M alone directly prove "19x9.5j ET20 works on the rear" without mentioning the front sizes as well. You can't combine the front and rear sizes of two different sets and say that works.

Nevertheless, I believe a squared set, although bmw has never officially offer any OEM squared sets, will work fine. That's why I'm also ordering a 19' squared set for my winter setup. I spent much time researching on the forum and I've seen many members with squared sets working fine, either on 19' or 20' sets.

Understand, I was not suggesting combining 829M rear with 826M front.

I agree on that last part and will be doing the same. Literally the only difference with my anticipated set is 9.5j front versus 9j on the 829M. A quarter inch on either side is the same footprint as an 826M front. And many on this board have wheel and tire sets that are a lot more divergent from OEM and not had a problem with fit.

[disancke]

Originally Posted by 8262S

Understand, I was not suggesting combining 829M rear with 826M front.

I agree on that last part and will be doing the same. Literally the only difference with my anticipated set is 9.5j front versus 9j on the 829M. A quarter inch on either side is the same footprint as an 826M front. And many on this board have wheel and tire sets that are a lot more divergent from OEM and not had a problem with fit.

Yup you got it. I understand your idea now. So a squared set would theoretically fit, and also the OEM 9.5Jx19 ET20 front size reassures us on the concerns of scratching sidewalls etc.

[8262S]

Originally Posted by disancke

Yup you got it. I understand your idea now. So a squared set would theoretically fit, and also the OEM 9.5Jx19 ET20 front size reassures us on the concerns of scratching sidewalls etc.

Yup. Sorry if my explanation wasn’t clear. Yours was much better!

[JTO24]

Originally Posted by 8262S

Thanks!

What wheels are those? Got a pic from the side?

Originally Posted by Kief

He is running VMR V710.
JTO24 cast or their flow form version?

Thanks, yes! and just the cast version

[8262S]

Originally Posted by JTO24

Thanks, yes! and just the cast version

Those look great!

[lorob121]

Originally Posted by pinky_chi

I run 19x9.5" with 275/35R19 squared for track days. The wheels are ET40 so I use a 20 and 22mm spacer to bring them out a bit. I actually use the 22mm in the front because there is less inner space vs the rear. The 20mm should work in the front too but I did it this way just in case since track tires run a bit wider and there is more tire deflection at higher G's.

Your only issue with with 19x9.5" ET20 + 275/35 will be that the rear will look tucked.

What size spacers would be recommended for the rear to offset the tucked look if the front doesnt have spacers? Wheel would be 19x9.5" ET22 + 275/35 squared setup.

[pinky_chi]

Originally Posted by lorob121

What size spacers would be recommended for the rear to offset the tucked look if the front doesnt have spacers? Wheel would be 19x9.5" ET22 + 275/35 squared setup.

It should be +2 +12.8 +10mm so a 24 or 25mm spacer would probably do. I'm getting the 2 to bring ET 22 to 20, 12.7 since its a 9.5" vs 10.5", and then the 10 since thats what forum users have been using to make the rear flush. To achieve the same 'tuck' as the front it would be a 14-15mm spacer.

[kiw1]

I have just purchased CSL Wheels (4x19) for my winter setup and plan to run 12mm spacers on the rear to account for the difference between the stock 20s and the 19s. Will report back once I have them installed.

[somer]

Originally Posted by kiw1

I have just purchased CSL Wheels (4x19) for my winter setup and plan to run 12mm spacers on the rear to account for the difference between the stock 20s and the 19s. Will report back once I have them installed.

Now get 4x rears for summer wheels