I have just acquired a 1998 2.5TD 4WD Bongo and looking forward to our first trip away - I note the owners manual states tyres should be 195/15 on front and 215/15 on rear. My van has ASA Alloys (all same size) but all tyres are 195/70 R15 - would I be better changing rears to 215 and if so 65 or 70 profile? Many thanks for looking
