Why? the 305/30 is within 9mm of the factory 275/35 rears but the 305/35 is 30mm too tall! You ruin your speedo programming and throw off the traction/stability/abs systems because they now have a faulty wheel speed reading. If you only want a softer ride research your tires and get a good touring tire or all season with better ride quality than summer only tires.
Research is your friend
https://www.willtheyfit.com/index.ph...=11&offset2=43
