Wheel vibration after trackday

[motorhole]

Hey guys,

I used R888r tyres for the first time on track the other day. Car drove there perfectly and performed great on track all day. But on the way home, the car developed a vibration at speed. Coasting didn't make it go away (so not drivetrain) and it was unaffected by brakes. Stopped to check all strut mounts, wheel bearings, lug nuts etc and all good - but there was a lot of rubber pickup and 'furling' around the grooves on the front tyres. Is it possible that this could cause the issue?

I'll stick my other set of wheels on at the weekend and see if it goes away. But is such behaviour from gummed up track tyres normal after a trackday?

Cheers!

[motorhole]

Ha, driving in the wet, who would've thought it? Assuming it is something to do with the wheels I'll give it a crack and failing that, I'll get them re-balanced.

Hopefully it is just the wheels...

Thanks!

[motorhole]

Heathrow said:

Worth checking the wheel carrier (hubs) too. I've experienced a cracked hub once after a track day.

Wheel bearing might be another reason.

Worth inspecting everything wheel/suspension related properly before your next track day.

Yeah I went over the car this weekend and all hubs, bearings etc were good. Stuck on the other set of wheels tyres and it drove perfectly. So issue definitely down to the wheels. Lots of melted rubber deposited around the inside, but I couldn't see any telltale signs of missing weights - no 'clean' bits or adhesive residue.

QBee said:

I would bet on a lost wheel weight ahead of accumulated rubber deposits.
I have had them come off my track car on the road - the flying weight hit the floor under my feet and felt like I had run over a spanner.

However, I am not clear - was it like it from the moment you left the track, or did it start during your journey home?

Thanks QBee - as above really. Difficult to tell if it was immediately after I left the track or someway during my journey due to the speeds at which it became noticeable.

[motorhole]

Well I had em rebalanced and all good.

Yeah my tyres look a lot healthier than those in the photos! My E30 is pretty light and even caning it round Oulton in 30 degrees hasn't destroyed the tyres. If I feel them beginning to go off it's time for a break. And they get checked between every session.

I have a spare set of wheels with R1Rs on for when there's any real chance of rain, either on track or on the way there/back.