my wife has had the staggered setup for about 4 months now, no issues

 

had mine for 1 year now and no issues too . Just remember to keep the overall tire diameter the same..

 

What tires sizes would you suggest I run for this set up, 19x9 +25 front and 19x10 +30 rear?

 

235/35/19, 275/30/19. I want to see that front when you have it on your car.

 

i say 225 35 19 front since you want a stretch with that low offset but it depends on your drop rear i would prefer 265-30 over 275-30 cause it look to meaty

 

^^def dont want it to look too meaty. So this tire set up you suggesting won't give my awd any issues?

 

Will the OEM IS250/IS350 18s with the OEM tires size work on AWD?

 

you should be all good im running 235-35 front and 265-30 rear but my next set up will be 225-35 and 235-35 rear

 

^ you gotta be careful with that setup, the rolling diameter might be too out of whack. I suggest the 235 and 275-30 setup

 

Work Vs-XX 19x8.5 +40 235/35/19 and 19x10 +45 265/30/19

I know I can go more aggressive, but at the time I got these wheels at a very good deal!!!

Been on since August and NO PROBLEMS.. Lowered on BC Coils as well

 

nice ride soleeasii

 

hmm a 265 in the rear causes no problems?

 

In short, the front 235-35-19 with a rear 275-30-19 is as close to same rolling diameter as possible.

front 25.476"
rear 25.496"

 

wait, isnt the middle number, 35 in 235-35-19 the profile size of the tire? How you can you run that with 30 size profile? wont the 30 be an even lower profile tire and not match the 35?

 

This is not a typo, no need to wait. The (profile) 35 versus 30 reflects a ratio, not a measurement.

Several stock BMW and Porsche cars run OEM tires with different profiles front and rear (35/30) just like this.