FYI, I said 315....it was a 325/30/19 above in the pictures, not 315
Very few vehicles run 20s with the exception of Range Rovers, and some X5M, but the tires are usually worn. New Porsche wear 325/20 in the rear....
Here are a couple notes to share regarding what I have vs. what you have to make a fair comparison of the pictures. I grabbed the offset of your rear wheel from the hand written mark on the inside of the wheel: 46
Your have a 12" wide, 46mm offset
Mine is a 11.5" wide, a 26mm offset
1LE/ZL1 is 11" wide, 43mm offset
Your wheel has 26mm less clearance on the inside of the wheel (towards the strut and extends 14mm less than mine on the outside (it is tucked 14mm more than mine)
Compared to a 1LE/ZL1 you have 14mm less clearance on the inside and extend 10mm more outward
- The tread width listed for a 315/35/20 Toyo ST2 is 12.20"
- The 315/35/20 Nitto NT-05 is listed a 12.40
- My 305/35/19 Nitto NT-05 is listed at 12.32
- Goodyear doesn't list width, but a 325/30/20 Dunlop measures in at 13.0"
With all of that being said, my 305 Nitto is wider than your 315 Toyo by .12", but it is on a wheel that is .5" slimmer making it look beefier.
To get the "same" look on a 12" wide wheel you will need a 325 rear tire.....or a 305 with a wider tread width.
Hope that makes sense and helps..
Matt