pfenlon Posted June 26, 2017 Report Share Posted June 26, 2017 I was very lucky to be given a TR6 original Workshop manual by Pogo a while since, which will be indispensable when I assemble my TR6 engine. when reading through it I noted that it suggested that if a car was to be painted in a hot paint booth the weight should be removed from the tyres. does this still apply? and if not why was it recommended way back then, radials were a go go weren't they? Quote Link to post Share on other sites
graeme Posted June 27, 2017 Report Share Posted June 27, 2017 when reading through it I noted that it suggested that if a car was to be painted in a hot paint booth the weight should be removed from the tyres. does this still apply? and if not why was it recommended way back then, radials were a go go weren't they? Peter, Just a guess, but could they be talking about the lead weights on the wheels which could melt in a hot oven? Cheers Graeme Quote Link to post Share on other sites
TR NIALL Posted June 27, 2017 Report Share Posted June 27, 2017 Maybe so you can Paint the Wheel Arch Lips better. Would Hot Air expand so much that it could Blow Out a Tyre. Quote Link to post Share on other sites
stillp Posted June 27, 2017 Report Share Posted June 27, 2017 Peter, Just a guess, but could they be talking about the lead weights on the wheels which could melt in a hot oven? Cheers Graeme Melting point of lead is about 327.5 °C. The weights are probably an alloy similar to solder, which melts at around 180 C, depending on the alloy. I doubt if a paint booth would get anywhere near either of those. I had some alloy wheels refurbed a while ago, and they gave two reasons for removing the weights: one was because the self-adhesive weights used on alloys would drop off anyway, and the other was so they could paint underneath the weights. Pete Quote Link to post Share on other sites
Waldi Posted June 27, 2017 Report Share Posted June 27, 2017 When tires are exposed to the sun on a very warm day they will reach a similar temperature (60 degr C or so). Quote Link to post Share on other sites
Alec Pringle Posted June 27, 2017 Report Share Posted June 27, 2017 Hi Pete, low bake ovens of the 1970s ran temperatures up to 70-80 degrees centigrade . . . . much hotter than tyres in even Mediterranean sun. Add to that the amount of solvent evaporating from the paint, and you have ideal conditions for reprofiling rubber. Hence the requirement to take the weight off tyres - failure to do so would simply result in permanently flat-spotted tyres. It was also not unusual to inflate the tyres to the maximum permitted poundage, just to be on the safe side. Cheers, Alec Quote Link to post Share on other sites
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