hmm so the tires play a big role here. so whats the best brand and size for our car(stock rims). the factory recommend size for front is 245/40R19 94W psi35 rear is 275/35R19 96W psi35. if we reduce the psi will it reduce the tramlining?

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if your goal is to reduce tramlining you just find tires with a softer sidewall in the same size.
performance tires have firmer sidewalls that extaggerate tramlining.

so, get the DW in stock tire size, use the correct tire pressure. 35psi cold.
i like to run the DW a tad higher at 37psi. i don't detect tramlining when i run DW...
atleast not to where the steering wheel is tugging at me.

dont confuse this with the DWS which is all season tires. i dont run all seasons on my
Z.

and im done talking about DW tires.

thank you very much for the info. really appreciate.

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I experience the same thing..I just had an alignment so its not that. Im running 255 and 305 in the rear so its probably that.