Any reason those three tires? They aren't equal comparisons. The S-04 and the Goodyear will outperform the DWS in the dry and wet, whereas the DWS would give you slightly longer treadlife and some snow traction. If snow and ice aren't a factor, maybe a different summer performance tire with longer life expectancy???
You can't compare UTQG ratings between manufacturers (and sometimes even between lines of tires within a manufacturer) because they are all tested differently... The government requires them be rated but doesn't put a specific way to test them to determine the rating - that is left up to the manufacturers...
I don't know how much room you have either, but I would think 245/40-19 would fit if 255/35-19 fits... it is narrower and just a touch taller...
-cody: maintenance forum moderator
2001 Lexus IS300 - 650whp/610wtq (Virtual Dyno)PTE 6765/AEM Infinity - Auburn Sky Pearl (1 of 1348)
2007 Lexus GS450h
2010 Lexus RX350
1998 Lexus GS300 - 1jz-GTE swap
1999 Isuzu VehiCross 285/75-16 Destination MT's - Astral Silver Metallic (1 of 1021) (for sale)