QUOTE(914xr75 @ Jan 26 2024, 09:51 AM)
I have an old Michelin installed on a wheel I purchased. looks like it could be original equipment. I don’t think they date coded the tires back then. Anybody know what tires the factory installed on our cars?
not sure about earlier cars.
but at a certain point in time in the early 70s they were pretty much coming out of the factory with dunlop SP57 as standard equipment. at least for north america.
my 74 had them still on it back in 89. not a bad tyre at all back in the day.
a mate of mine has a 76 911 (aus delivery) that he has had since new.
he took the original cookie cutters off it way back in time with the orig tyres still mounted and they are in his shed. dunlop SP57s as well. i think porsche had a deal with dunlop during those years as the basic factory fitment.
higher up the pecking order if you look at photos of the silver 914/8 of dr. porsche its always had michelin XWX on it and still wears them today. the 916s also seem to have had them originally. super duper micheline rated for the high speeds the cars were capable of.
but you could also order your tyres to suit from factory.
and a lot of cars had michelin XZX which were lower down the pecking order than XWX and an equal alternative to the dunlops.
the closest thing to the tread pattern etc of the SP57s are the XWX but repro XWX do not come in the skinny 165 tyres these days that every day 914s originally had. only come in wider 185 size.
and of course you could still get the legendary XAS tyres on your 914 if you wanted them. a slightly earlier late 60s tyre that was and still is fantastic. even better as a repro than originally due to a softer compound these days.
you could really get almost anything back then.
if you ticked a box. pretty much the same as VWs.
i know that in australia back in the 70s a lot of VWs came from the factory with Semperit tyres. great little tyres but a brand name that seemed to disappear from the world back last century.