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      02-08-2024, 10:20 AM   #1
Rocketsoda
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Tire size causing DCT/drivetrain issues?

Hi all, really need some help.

My winter tire set up is as follows:

255/35/20 front
275/35/20 rear

Apparently this is a rolling diameter difference of 2.04% or so. Can this cause drivetrain issues? Above 60mph the transmission has been acting odd, where sometimes the downshifts are lethargic, sometimes it feels like when I get off the gas the clutch disengages and I have no engine braking momentarily.

I’ve done a lot of reading and saw people had similar experience and it was solved by correcting/changing the tire size. For reference my summer wheel set up is 275/35/20 front, 305/30/20 rear, a difference of 1.3%.

Any insight/help/guidance would be GREATLY appreciated.
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      02-08-2024, 01:04 PM   #2
M5_Raz
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Yes, of course. I wouldn’t even drive it anymore without correct tires, too much stress on the drivetrain.
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      02-09-2024, 07:11 PM   #3
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yes my man, i just fixed this issue completely by changing to the right tire sizes. look at my post for info on symptoms and what not.
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