"Interesting. Would like more info."
Me too. You can still drive the car with two flat tires

& I wonder if there would be any effect with mixing inner/outer with two different types of tires, say....rain & dry/summers?
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76'S 1st Porsche white/can/can early rebuild (boo)

'84 Carrera cpe. all blk & stock 340k never a let down (might have been the best1)

'87 Carrera cpe white/blue short flirt

'89 Anniv. sil/linen very pretty miss her

'88 928S4 5spd. blu/blu cmplt.SS exh.chipped lowered