The 245/35/18 is 6mm smaller in diameter than a 225/40/18, take into account the squashing effect and they will be about the same. TBH, ive fitted 245 to a 7.5 rim before and i diddnt like the look..... each to there own though!!
took them off wifes new tts cos the buffers on the side didnot protect the wheels u know what i mean 2 scuffed wheels in 2 days of picking it up.
The so called "rim protector" is a load of rubbish IMO. How is a small strip of rubber 3mm deep going to stop 1200kg of car from hitting a wheel on a kurb?