Bout time to do some measuring.Check to see how much clearance you have now with the 205s.Then talk with your tire dealer ,he should be able to give you the measurements of the 205s and the 235s.On my 55 I am running 215s on the front and 235s on the rear.I had to get wheels with 5 inch back spacing for the rear,due to the wider tires.Wheels on front are 7 in.wide and 8 in.wide on the rear.