Forgive me if there is a thread somewhere that already address's this question. I did a search but could not find the information
@rabtech If this is a duplicate thread please feel free to delete this one
On Face book there is a post dealing with running a 305 tire on the stock SL rim here
A little background regarding stock SL sizing
Front: 225/45/18 Rims: 18X7.5 Diameter: 26.0"
Rear: 255/35/20 Rims: 20x9.0 Diameter: 27.0"
The recommended 305 size on an SL rim is a Nitto G2 305/35/20, which I do not understand it has a diameter of 28.43, which is 1.43" larger then the stock tire.
The Nitto G2 305/30/20 has a diameter of 27.24 which is very close to the diameter of the stock SL tire.
Why is it recommended to run the larger diameter 35 size vs the 30??? is it because the tire should be mounted to a 10" minimum rim width vs the stock 9.5" wide rim?
The difference in percentage from stock to the 35 is 5.2% larger, which I think would throw codes.
The 30 is within 0.7% of the stock SL rear tire
Now if we compare the % ratio for stock SL front to rear we have 3.8%
But it we use the 305/35/20 the ratio of stock front to this tire is +9.2%
the 305/30/20 difference from front stock to this tire is 4.6%
If anybody has information regarding running the 305 on stock SL rear. Please provide your experience and wisdom