The generation of greater forces under braking and cornering highlight some deficiencies in the vehicle’ s springing and wire wheel strength. The fitment of the optional 9 / 16 th diameter front anti-roll bar will counter the greater cornering forces potentially available from radials and much firmer MGB V8 inner wishbone bushes to replace the“ top hat” rubbers, provide for better location of the suspension and more accurate steering. The replacement of rubber with Polyurethane for the rear shackle bushes will reduce rear end steering effects. These measures are advisable due to the less progressive nature of the transition from full adhesion to a“ breakaway”( lurid slide) event. Some of us are old enough to know( and to survive) the effects on quickly driven cars when radial ply tyres were first fitted. They had be-
January / February 2017
come generally available by the mid 1960’ s. Finally, the original equipment 48 spoke wire wheels are simply not strong enough to withstand the forces that can be generated by radial ply tyres, especially under emergency braking on dry roads. Some members, having experienced spoke breakages, wheel rim damage and distortion, have replaced them with cross laced wire wheels with 60 or 72 spokes. I recommend replacement with the 72 spoke 5 inch wide by 15 inch diameter wheels that were standard equipment on the MGC. The 165 / 80 x 15 size radial ply tyre, commonly in use, can be refitted onto this wheel rim and, if you purchase an extra rim for the spare, will still fit into the baulk head cavity in the boot. Geoff Goode Club Historic Vehicle Registrar
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