planing to get

19*8.5 35
19*9.5 40

and

235/35 font
265/30 rear

with rsr downs

does it works with my 3is?

 

Nearly exactly what I have which works and no rubbing.

19*8.5 38 235/35/19
19*9.5 38 265/30/19

with rsr downs

 

Provided you don't go with Michelin Pilot Super Sports tires, you should be good
That's what I'm on now and it's pretty crazy rubbing on dips...

 

It's a good point since not every tire of the "same labeled size" is of the same width.

I have Ohtsu FP8000 (rebrand of Falken FK452) 265/30/19 at the rear and they are on the skinnier side at only 10.2" wide versus most others of this size are around 10.5" - 10.7". That 0.3-0.5" is the difference between rubbing or not.

 

My Toyo T1 Sports measured 235/35 and 265/30 are a bit stretched sitting on the 8,5 and 9,5 rims respectively! Recently met my friend who rides BMW 320d on Conti Sportcontacts and his 235/40 and 255/35 ARE WIDER on the same width rims than my Toyos despite having the less claimed width.

 

I can say it's a near perfect semi aggressive setup

 

Is there a site where you can get all of the tire width info. you mentioned?
Looks like I'm gonna need to live with the rubbing until these PSS wears out

Would be nice info to have for my next set.

 

Tirerack has most of the dimensions and when they don't for a specific tire you're interested, sometimes the manufacturer does, or just google...