Judder at 80mph!

[Bonzeau]

Hi everyone, Been out to Snetterton today for a few laps around the 300 circuit. All very enjoyable, didn't hit anything or spin, ( a guy in front of me went off just before Murray's!) but coming home noticed a judder around 80 mph. I stopped and gave the wheels a tug and they all seemed tight. I'll get the wheels balanced, but if that doesn't cure it what else could be causing it?
(OEM suspension, replaced 2 years ago)
Many thanks



Bonzo

 

[g8jka]

Might have lost some wheel weights but it is most likely to be a sticky brake caliper. Did any of the wheels feel hot when you stopped? It's usually a front one which is a common problem.

 

[Rudyrov]

Thats a head scratcher, guessing you'll have to explore what is happening, like determining what speed it happens at, does it come and go if you pass through it and go faster etc.
But, I would do a check of tire balance and suspension components as well as drive shaft & engine mounts before you start flying around looking for s shudder. Be Safe!

 

[t-tony]

Best bet is sticking callipers), especially after some hard use.

Tony.

 

[Mazza]

80mph on the way home ????.....mmmmmm !!!!!

I suppose the Norfolk police cant catch you on their tractors.......ooooops...forgot.....in trouble again.

 

[Sean d]

80mph on the way home ????.....mmmmmm !!!!!

I suppose the Norfolk police cant catch you on their tractors.......ooooops...forgot.....in trouble again.

You forgot to add, the six fingered Norfolk police

 

[Slam]

Come on lads stop picking on Norfolk!!

 

[gookah]

brake calliper..
feel the wheels to see which one is hot.

 

[Dino D]

I put 50p on it being the passenger side!

 

[Mazza]

......but Bonzeau lives in Norfolk,

 

[alec.m]

I`ve had similar symptoms. 1st time it was the wishbone rear(lollipop) bush that was knackered. Replaced that with poly bushes. Cured it. Last week similar symptoms but vibrating badly at 40 to 50mph. This time a sticking caliper. It was obvious because the wheel was quite warm. New caliper and it`s sorted.

Both times were nearside Dino D

 

[bessieblue]

check tyres & wheel bearings ?

 

[Bonzeau]

Don't think I felt it through the steering, but noticed a squeal from offside (I think) rear when braking.
The juddering disappeared at 120mph

 

[Brian4]

Could also be warped discs. See which wheel or disc gets warmer after a short run.

 

[Bonzeau]

Thanks for all your replies!

Bonzo.

 

[Bumpa]

It was the right (off side) caliper on mine. The wheel was hot enough to fry an egg on it. I ended up stripping all four calipers and fitting new pistons and seals.

 

[Mario]

I am with the guys that say sticking calipers but if it's not that I would suggest maybe after a track session if you didn't cool the brakes properly and stopped maybe you got some pad material transferred to the disk and it made a pad"imprint" and now that is causing the vibration , I had a similar thing and it was very visible, it has dissapeared overtime.