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[kafou]

Hi,

I will buy very soon my new tires for this summer.
Which of these sizes is the best for a 128i with M sport package and 18" wheels.

Make your choice!!! :thump:

Kafou

[TheSt|G]

Any power mods?

[bmw1racer]

Go square.

[TheSt|G]

Originally Posted by bmw1racer

Go square.

Also this.

Stock power? 215 or 225 square. Modded? 235 Square.

[kafou]

Originally Posted by TheSt|G

Any power mods?

Not for now, and not sure I will do it as it is a DD.

Kafou

[kafou]

Originally Posted by bmw1racer

Go square.

Did a square setup affect that much the balance of the car? My opinion to date was to go for 245, mainly because I like the look of the car with biggest tires but if the handling is that much better with 225 I will go with that.

Kafou

[lowbudgethero]

I'd go 245

[TheSt|G]

Originally Posted by kafou

Not for now, and not sure I will do it as it is a DD.

Kafou

None of the 128i power mods compromise that DD status. I should know, I have them all in my daily driver.

Originally Posted by kafou

Did a square setup affect that much the balance of the car? My opinion to date was to go for 245, mainly because I like the look of the car with biggest tires but if the handling is that much better with 225 I will go with that.

Kafou

Square setup dials out a good bit of the factory understeer. I really doubt you will need a 245 setup as I'm significantly up over stock power and running 235 square. You also start to run into front wheel fitment issues at that point.

[kafou]

Originally Posted by TheSt|G

None of the 128i power mods compromise that DD status. I should know, I have them all in my daily driver.



Square setup dials out a good bit of the factory understeer. I really doubt you will need a 245 setup as I'm significantly up over stock power and running 235 square. You also start to run into front wheel fitment issues at that point.

On my 3 setup choice, the front are 225. The difference is only the rear. I know that if I go with 255 I will stay with the factory balance, 225 is suppose to improve the factory understeer, so maybe 245 is a good compromise between understeer and good looking.

[TheSt|G]

Originally Posted by kafou

On my 3 setup choice, the front are 225. The difference is only the rear. I know that if I go with 255 I will stay with the factory balance, 225 is suppose to improve the factory understeer, so maybe 245 is a good compromise between understeer and good looking.

I guess I always considered the 1 Series a lost cause in looks, so I focused on function.

[hoki06]

225 or 235 square

If you have all power mods then maybe you'll have a need for 245... maybe

[Olgeezer1]

Looking at the same situation this spring. I'm going to use the staggered stock 263 wheels and go w/225's squared. Don't see the need for more rubber than that on a stock car and those fatter tires just going to cost you more at the pumps.

[631twentyeighteye]

225 squared. there's no reason to have anymore tire even with all the power mods for 128. Running a staggered setup is a a waste of tire, money and weight and causes understeer.

For the record i run 215/245 on my summer setup and it's unnecessary and has a lot of understeer compared to my winter setup which is 225-45-17 squared.

[The Dowager Countess]

The stock msport rims are not the same width in front as in back, but you can and should use the same size tires.

[Bimmer-Bob]

No matter what, just go square. 225, 235, or 245, depending on wheel size and other mods. I'm running 17" 245's all around with no fitment issues.

[TheSt|G]

Originally Posted by hoki06

225 or 235 square

If you have all power mods then maybe you'll have a need for 245... maybe

As someone who runs 235 square in the summer with all the power mods, you really don't need 245.

[John_01]

You may not need 245's for traction but it will give the rear rims better protection.

The cars tendency to understeer can be fixed with some front negative camber. 225F / 245R tire sizes can give nicely neutral street handling once you add front camber.

[kafou]

Well, it's pretty close between square 225 or staggered with 245 rear. Have read a lots of comment from members who prefer square but not that much from the members who voted for 245. I'm curious to hear your comments. My wheels are the 261, so not the same size front and rear, I don't think that if I go square that will be a problem but if so, tell me...

Thanks

Kafou

[Dackelone]

Originally Posted by kafou

Well, it's pretty close between square 225 or staggered with 245 rear. Have read a lots of comment from members who prefer square but not that much from the members who voted for 245. I'm curious to hear your comments. My wheels are the 261, so not the same size front and rear, I don't think that if I go square that will be a problem but if so, tell me...

Thanks

Kafou

One reason why I decided to go with 225/255's... was that the 255 rear tires were a lot cheaper than 245's versions Just something to consider.


What ever tire you go for make sure the tire sidewall is reinforced(higher load rating) for better turn in than normal tires would provide.


My new Michelin PS3’s 225’s & 255’s…
http://www.1addicts.com/forums/showt...chelin+PS3%27s

[Bimmer-Bob]

Originally Posted by John_01

You may not need 245's for traction but it will give the rear rims better protection.

Not to mention more contact patch.

Originally Posted by John_01

The cars tendency to understeer can be fixed with some front negative camber. 225F / 245R tire sizes can give nicely neutral street handling once you add front camber.

True, but why not add negative camber and square the tires?

[John_01]

Originally Posted by Bimmer-Bob

True, but why not add negative camber and square the tires?

I think it depends on the type of handling you expect and what you will use the car for. The car can still have plenty of turn in with staggered tires. If still using stock rear sub frame bushings I think its best to be cautious about adding front camber combined with non-staggered tire sizes.

The stock rear subframe bushings can cause unpredictable handling, which can be a very unwelcome source of instability. I wouldn't automatically recommend non-staggered tires in that case.

[kafou]

Not easy to make a choice, more members choose staggered (13vs9). But more comments about why choose square...