Hi, ive got 235/85/16 on disco rims on my 200tdi +40mm springs 30mm spacers and 2" flexi arches and have no probs with props or steering. Standard 205/16's are about 28.91inch i guess you are thinking 31/10.50/15 which are about 30.97". mine work out as 31.72" but i want to go up to 255/85/16...