[Healeys] TIRES

[sebring at illawarra.hotkey.net.au]

Check www.dunloptires.com. They say the correct nominal rim size is 70% of the 
manufactures tire section size ( plus or minus a bit ).Therefore a 165 tire 
suits 4.5 inch rim, 175 a 4.8inch,185 a 5.0inch and 195 a 5.3inch. The 
selection criteria should be the correct width of tire to rim as that affects 
the amount and position at which the tire flexes = heat build-up. Next select 
an aspect ratio that best suits you desired overall diameter and therefore 
rolling circumference. Obviously we can adjust the width/section size to rim 
size a small degree.
Joe