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[harendre7201]

The car needs new shoes so I am about to the pull the trigger on a set of 19" M3 competition rims matte black from **********s for my E90.
The car has a H&R Sport Suspension springs

Rims:
Front: 19 x 8.5 ET35
Rear: 19 x 9.5 ET 35

http://www.**********s.com/M3-Compet...atte-Black.htm

Just running through the probable tire configs:

1. Front: 225/35/19
Rear: 245/35/19

2. Front: 235/35/19
Rear: 255/35/19

3. Front: 235/35/19
Rear: 265/35/19

Please give me advice of the the best possible options.
Lets be honest I am on a budget and dont need $400 tires.
I live in SoCal so just thinking about running summer performance tires.

[325iii]

i have

19 x 8.5 235/35/19 front
19 x 9.5 265/30/19 rear

Edit: I'm also in socal, the setup seems fine to me

[harendre7201]

what kind of tires are you running?

[flip4335]

Originally Posted by harendre7201

The car needs new shoes so I am about to the pull the trigger on a set of 19" M3 competition rims matte black from **********s for my E90.
The car has a H&R Sport Suspension springs

Rims:
Front: 19 x 8.5 ET35
Rear: 19 x 9.5 ET 35

http://www.**********s.com/M3-Compet...atte-Black.htm

Just running through the probable tire configs:

1. Front: 225/35/19
Rear: 245/35/19

2. Front: 235/35/19
Rear: 255/35/19

3. Front: 235/35/19
Rear: 265/35/19

Please give me advice of the the best possible options.
Lets be honest I am on a budget and dont need $400 tires.
I live in SoCal so just thinking about running summer performance tires.

You will speedo issues running the above configurations. Namely, the rear tire/wheel will be larger in diameter than the fronts. Those specs are only for the M3 due to the larger capacity in the rear wheel well and the M3 speedo was spec'd with larger tire sizes in the back.

Our non-M speedos were calibrated for a more consistent diameter front and back, so putting 30-series tires in the rear makes more sense in order to make front and back diameters consistent.

Best bet would be to run the following to ensure front and back wheel diameters are the same:

225/35/19F, 265/30/19R

or

235/35/19F, 275/30/19R

Both specs have less than one percent difference in diameter between front and rear. To validate, try using the wheel dimension calculator above this Tire Rack-sponsored forum to determine if your speedo will read correctly at 60 mph.

[ModBargains.com]

flip4335 is correct as you will throw off your speedo with the setups that you've mentioned. I would recommend that you go with either setups below.

Front: 235/35/19
Rear: 265/30/19 or 275/30/19