car vibration @70 mph - new tyres?

lescargot · 19-05-2006, 20:33

Changed my rear tyres to some goodyear f1 225/45 r17 recently leaving 205/50 r17s on the front. Doing some motorway driving today have noticed some quite marked vibrations above 70 mph. Still need to check if they are fitted for the correct direction. Are the wheels perhaps not balanced correctly? Or is because I am mixing sizes?

Cheers

SkodiRS · 19-05-2006, 22:14

They'll have some arrows on the side walls pointing in correct direction of rotation.

Sounds like the wheels need to be properly balanced though.

Smifffy 3 f's · 19-05-2006, 22:52

I did exactly the same (with Goodyear F1's) and ran for about 6000 miles with no problems. Go back to your tyre fitters and get the wheel balance checked.

WW_VRS · 20-05-2006, 07:47

Deffo sounds like wheels have not been balanced - if you paid for it I'd be pretty annoyed as it can be downright dangerous if you were to exceed NSL by a margin

Other things to check are tyre pressures as if one is too low it can have a pretty bad impact on the stability of the car when it hits bumps in the road etc.

19-05-2006, 20:33	#1
lescargot Briskodian Join Date: Apr 2005 Location: London Posts: 43 Thanks: 1 Thanked 0 Times in 0 Posts	car vibration @70 mph - new tyres? Changed my rear tyres to some goodyear f1 225/45 r17 recently leaving 205/50 r17s on the front. Doing some motorway driving today have noticed some quite marked vibrations above 70 mph. Still need to check if they are fitted for the correct direction. Are the wheels perhaps not balanced correctly? Or is because I am mixing sizes? Cheers

19-05-2006, 22:14	#2
SkodiRS BRISKODA Staff Join Date: Oct 2002 Location: darkest Hampshire Posts: 8,650 Thanks: 0 Thanked 17 Times in 13 Posts	Re: car vibration @70 mph - new tyres? They'll have some arrows on the side walls pointing in correct direction of rotation. Sounds like the wheels need to be properly balanced though. __________________ Adrian.

19-05-2006, 22:52	#3
Smifffy 3 f's Briskodian Join Date: Sep 2004 Location: Lancashire Posts: 571 Thanks: 1 Thanked 0 Times in 0 Posts	Re: car vibration @70 mph - new tyres? I did exactly the same (with Goodyear F1's) and ran for about 6000 miles with no problems. Go back to your tyre fitters and get the wheel balance checked. __________________ AL. I'm not bald, I've just got low-maintenance hair.

20-05-2006, 07:47	#4
WW_VRS Escorted Estate Join Date: Nov 2004 Location: Oxfordshire/Berkshire Posts: 9,734 Thanks: 44 Thanked 70 Times in 61 Posts	Re: car vibration @70 mph - new tyres? Deffo sounds like wheels have not been balanced - if you paid for it I'd be pretty annoyed as it can be downright dangerous if you were to exceed NSL by a margin Other things to check are tyre pressures as if one is too low it can have a pretty bad impact on the stability of the car when it hits bumps in the road etc. __________________ WW --->> Project Journal (pic links in first post there) Lummox'/Ross thread on Unit18 Automotive progress on my car: here

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