235/35/19 Square set up

[True-Blue]

Afternoon all, so the plan to run a Square set up on the Mrs 23i is taking shape, two front 326’s inbound next week and hopefully two more I can collect locally over the weekend.

I’m contemplating a 235/35/19 Square set up to keep costs down as the Mrs is budget conscious, and this size hits a bit of a sweet spot in terms of size vs price.

On the basis that the car currently runs 225/45/17 tires on the style 290 17 x 8j ET 29’s as a square set up, a 19x8j ET29 set up on 235/35/19’s feels like it should work nicely, any thoughts?…. Am I missing anything?

 

[MarshMA10]

Non-expert observation—it might / probably will get a bit understeery? My previous cars (MR2 and a corvette) have always had non square setups and don’t respond well to square ones! Curious to hear forum wisdom.

 

[True-Blue]

Non-expert observation—it might / probably will get a bit understeery? My previous cars (MR2 and a corvette) have always had non square setups and don’t respond well to square ones! Curious to hear forum wisdom.

All E89, E86 and E85 factory 17’s run a square tire set up

 

[B21]

Afternoon all, so the plan to run a Square set up on the Mrs 23i is taking shape, two front 326’s inbound next week and hopefully two more I can collect locally over the weekend.

I’m contemplating a 235/35/19 Square set up to keep costs down as the Mrs is budget conscious, and this size hits a bit of a sweet spot in terms of size vs price.

On the basis that the car currently runs 225/45/17 tires on the style 290 17 x 8j ET 29’s as a square set up, a 19x8j ET29 set up on 235/35/19’s feels like it should work nicely, any thoughts?…. Am I missing anything?

Should be fine..

 

[Mr Tidy]

From what I have read the staggered set ups make BMWs more understeery than the square ones.

My E90 330i has 8J x 17 wheels and 225/45 tyres all round and it drives fine for a saloon. In fact for a few years I did run it on Style 290s with the summer tyres.

I can't see why what you propose would be an issue.

 

[mr wilks]

I dont see any issue at all going with the 4 fronts .
Id stagger the tyres though.
215 or 225 40 19 fronts with 245 35 19 rears .

 

[MarshMA10]

Wow well I learned something today. I think my e89 is 255 rear, and 225 front.

 

[Mr Tidy]

I'm not sure you did!

I suspect your 35i has staggered wheels so the rear tyres will have to be wider than the fronts because the rims are wider too.

This thread relates to fitting a set of wheels the same width front and rear. So I'm not sure why you'd fit different tyre widths. :?

 

[Blurredman]

D'oh, only just found this thread

I am about to do the same thing - putting 19" 8J's all round (cracked rear 9J's, etc etc). I am also switching to non- runflats and was planning to keep 225/35 on the front and put 235/35 on the back. Interested to hear if other tyre sizes might work better, and if anyone thinks spacers on the back are worth the bother.

 

[Welsh Terrier]

I have the 235/35 19R 92y square set up.
The door stickers don’t give the tyre pressures for these.
Can anyone advise of the correct pressures they are Bridgestone Potenza
Thanks for your help

 

[B21]

I have the 235/35 19R 92y square set up.
The door stickers don’t give the tyre pressures for these.
Can anyone advise of the correct pressures they are Bridgestone Potenza
Thanks for your help

There never was a 19" square set up..hence why there is no door sticker to that effect..

You must therefore have two fronts on the rears..suggest about 38-40 for those..FWIW

 

[Welsh Terrier]

Hi
Thanks for taking the time to come back to me.
I guess you are right regarding the set up
Do I run the same pressure on the front as on the rear?
Thanks Again

 

[B21]

Hi
Thanks for taking the time to come back to me.
I guess you are right regarding the set up
Do I run the same pressure on the front as on the rear?
Thanks Again

Read my reply..

 

[Welsh Terrier]

Did do so again - Thanks