[BatMobileLT1]

Originally Posted by whitelt1

I see. It appears that 275/35R20 and 305/30R20 would work for me with DWS06 Plus. Tirerack states that the diameter of the stock Goodyear A/S runflats are 27.7" and DWS06 Plus even in those sizes is a little under (27.6" front and 27.2" rear)

actually thinking about it, would it be bad to have the front just .4" more than rear?

Note - I haven't tried these wider sizes myself yet (I am currently on the 275/35/20 rears as per my signature), so good idea for you to chat with tirerack advisor, and/or hear from others that have on this forum.

That said - my goal was to keep w/in 1-2% of LT1 stock 245/40/20 of 27.7" and to keep front and rear tire size close to each other (as LT1 didn't come with smaller fronts like the 1LE).
So my logic/thinking was:
* Go with 305/30/20 rear tire size that SS 1LE uses that matches the 11" 1LE rear wheel and is within -1.8% of stock size. [Going to 315/30/20 would come closer on tire diameter but their isn't much tire choice in that size and it seemed too much to me to run wider than 1LE tires on LT1.]
* Then going with 265/35/20 at -1.4% from stock size to better match the size of those rear tires better than going with 275/35/20 that match original size better but would be taller than the new rear tires.
[and by staying with slightly taller front tire than 1LE 285/30/20 it will not shrink the sidewall as much]
* The tradeoff/downside to this combo is it has more stagger (fronts are 40mm narrower than rear tires) than the standard staggers of SS/1LE/ZLE that have 30mm or 20mm, but I don't think this will be an issue for my LT1 use as DD.

Hope that is helpful input for you.