Do you have a Holiday Inn Express nearby? With the stock wheel there's only 6 to 8mm on the inside to the suspension bolt. How do I know. I put a 235 on the stock rim and had only a credit card clearance. (235 = 5mm more to the inside and 5mm more to the outside from stock) So I put a 5mm spacer on for safety reasons. Then, silly me, I put a 10mm spacer on with the 235. (15mm more to the outside from stock) Fits great! So, with a 32 offset we have a touch over 5 mm on the inside and a touch over 15 mm to the outside. I now have a 255 on the front with a 30 offset. Being lowered it hit the fender lip on bumps. At stock height, couldn't say. I rolled the fender. But wait, I have lots of negative camber. A 255 with stock camber would rub the lip even more. I can assure you that your front rims and tires will fit perfectly with a 30 offset. (50 - 20 = 30) The rear is another matter. Again, I have lots of negative camber. With less rear camber I might not rub. With a 275 I didn't rub that I recall. You have a 40 ET. I keep screying up the rear calculations so I'm giving up. You can't go farther inside than a 25 offset. 40 - 15 = 25. A few mm less would be ideal. So is it a 12 or 18, heck, I can't get it right so you tell me.

Les