Tyre wear pattern/overheating rears, setup advice.

[MLB]

Good morning,

Had a track day at Oulton last Thursday, first dry track day I've had and it was brilliant!

Car felt great, but I noticed that after a couple of hard laps the rear started to get a bit loose/floaty.

They are old budget tyres (2016 Federal 595 RSR), car is running cup dampers with grams springs, PMS solid top mounts front, 20mm spacers front and PMS stub axle spacers in the rear. Also got a whiteline rear ARB set to hard.

Checked the tyres and the front seem to be wearing quite evenly, but the rears looked to overheat (?) on the inside.

Since fitting the stub axle spacers the rear camber is just over 2.

Worth bringing this back to 1.5 with shims or is this driving style related?

Fronts

Rears

 

[Crayola]

Look reasonably alright for me

Swap em to the front for a bit and wear em evenly

 

[Breamy]

Mine get alot like that too . Have to swap them round and burn it off sometimes

 

[MLB]

Thanks guys, good to know it's fairly normal looking. Just wanted to check as I have no experience with these things.

 

[TheEvilGiraffe]

Car felt great, but I noticed that after a couple of hard laps the rear started to get a bit loose/floaty.

What were the pressures doing ?

 

[Coops Mk1]

Doesn't look too bad, rsr's aren't amazing tyres anyway, few laps and you'll find them dying off

 

[MLB]

What were the pressures doing ?

I tried keeping them around 30 psi hot for the front, 29 for the rear.

Doesn't look too bad, rsr's aren't amazing tyres anyway, few laps and you'll find them dying off

I have read that before, exactly my experience. Just like the shoulder wear on the front altough that might be due not running a lot of negative camber on the front (1 degree iirc).

 

[Daniel]

I run 30 hot in the front and 40 hot in the rear.
(My car weighs f**k all though?)

But my tyres wear the same way as yours, albeit I have MRF’s.

As Kyle said, just rotate them to get your money’s worth.

 

[RSRowe]

They haven’t overheated. That’s pickup…. It’s completely normal.

 

[Coops Mk1]

@Daniel 40 rear? f**king hell that must be ridiculously lively 🤪

 

[TheEvilGiraffe]

^ as per.

Lighter the car, the less pressure you need/want.

Caterham 7s run high teens cold !

 

[Daniel]

@Daniel 40 rear? f**king hell that must be ridiculously lively 🤪

No not at all. It’s really really safe and predictable.
Apart from a diff (and the driver) I can’t fault anything with the car.

 

[Coops Mk1]

@Daniel I've never heard of anyone ever running such high pressures on the rear axle is all, sounds absolutely terrifying, especially with zero weight over them that's van with 500+kg in the back pressures

 

[Daniel]

@Daniel I've never heard of anyone ever running such high pressures on the rear axle is all, sounds absolutely terrifying, especially with zero weight over them that's van with 500+kg in the back pressures

If Josh Cook was ok with 50+ in his rear tyres in his 182 on track, 40 is good enough for me. 😂

 

[Coops Mk1]

@Daniel but he's an actual racing driver who can pedal, not a middle age baldy like us who can't tell a steering wheel from a hemorrhoid ring

 

[-Jamie-]

Used to run 38+ on the rear of the Megane as well tbf [emoji28]

 

[Djw John]

Yeah I run 45 cold at the back. Helps dial out understeer and helps turn in.
Try it you might be surprised

 

[Coops Mk1]

If the thing turned in any better I'd be doing oversteer pirouettes

 

[Brigsy]

Just looks like rubber pickup to me on the rears. It usually pings off into the arches with a few road miles

 

[MLB]

Interesting to read about tyre pressures on the rears. Might need to play a bit more with them next time.

And most of the rubber deposits did fly off driving back home so maybe it was just due to the tyres themselves rather than external factors.

Be interesting to try something else after these, would something like Zestino Gredge 07RS or Giti GTR2 be a step up (still being budget tyres) or best to go for something like AR1s or R888Rs?

 

[-Jamie-]

Depends what your wanting? The budget tyres don't compare to the proper stuff like 03Gs/A052s but if it's just value for money then they are hard to look past

 

[atgregory]

I'd recommend softs on the rear Toyo 888 soft or yoko 48's soft compound. Medium compound on the front softs on rear work well on front wheel drive 👍

 

[MLB]

Depends what your wanting? The budget tyres don't compare to the proper stuff like 03Gs/A052s but if it's just value for money then they are hard to look past

Sorry, missed this one! I'm not experienced at all, but I did find that the RSRs were going off quite quickly even without feeling like I was pushing myself to the limit so a step up would be what I'm after.

Seems the price of budgets is around £85 per corner where the 03Gs seem to be £160? I'd probably like to try something in between in the price spectrum if that's available or just go for the proper stuff and not drive them in the road.

I'd recommend softs on the rear Toyo 888 soft or yoko 48's soft compound. Medium compound on the front softs on rear work well on front wheel drive 👍

That's interesting, hadn't thought of that, but prefer to be able to swap front to back to get te most wear out of a set!

 

[Eddie555]

Sorry, missed this one! I'm not experienced at all, but I did find that the RSRs were going off quite quickly even without feeling like I was pushing myself to the limit so a step up would be what I'm after.

Seems the price of budgets is around £85 per corner where the 03Gs seem to be £160? I'd probably like to try something in between in the price spectrum if that's available or just go for the proper stuff and not drive them in the road.



That's interesting, hadn't thought of that, but prefer to be able to swap front to back to get te most wear out of a set!

If you want to go for an inbetween then Nankang AR1 is your best option. Around £95 a corner. Personally i find them better than R888r.

Sent from my SM-G998B using Tapatalk

 

[banhama]

As above those tyres look fine!

I think there must be as many different opinions and experiences of track tyres as there are track cars and race track combinations!

Personally I have found the car work best for me if the rears are higher pressure, harder compound or stiffer dampers, and the fronts are softer.
So completely the opposite to a previous post, but both could be right for the car, track and driver combo.
My experience is mainly at a tight track with an abrasive surface. The rears are a bit too skippy for the first couple of laps but then they heat up to a point where they have some bite, but still allows the car to rotate into the corners.
This has worked out quite well as I can use crappy old hard tyres on the rear, and adjust the dampers and pressures accordingly.
I've got some of my best lap times with Federal 595s that look worse than yours, and newish AR-1s on the front.
It is always the fronts that give up grip first as the day goes on.

With regard to 40psi at the rear there are 3 Saxos I race with that run 40psi at the rear. They are about as heavy as a bag of crisps but go really well!
It's all so confusing!

 

[JB21]

Rears look fine, the inner wear on the fronts looks toe out related or under inflated tyres, or a mixture of both. Not enough camber to cause that much wear really.

 

[JamesBryan]

That's just rubber pick-up, nothing to worry about.

 

[MLB]

Thanks guys, most of it has worn off after about 200 miles on the motorway as was suggested.

@JB21 geo setup does need a bit of work, but that's doe the future, works well enough but ideally I'd like camber/caster adjustment and sort the rear out with shims.

Need to decide on what spring rate coilovers to get, but I'd like to see/feel some other cars with (preferably bc racing/ast) coilovers first.

 

[ripp]

Hi guys,

Recently installed my Bilstein B14 kit which I'm so so pleased about, did a trackday couple of days ago and really liked how the car behaved.
I currently run Nankangs NS2R's in 205/45 16 size and was wondering if going next level on the tyres - AR1's, R888's and the likes- would be too much for the billies? (creating too much body roll maybe?)
Anyone running softer tyres with b14's to share some thoughts?
Thx!

 

[JB21]

Hi guys,

Recently installed my Bilstein B14 kit which I'm so so pleased about, did a trackday couple of days ago and really liked how the car behaved.
I currently run Nankangs NS2R's in 205/45 16 size and was wondering if going next level on the tyres - AR1's, R888's and the likes- would be too much for the billies? (creating too much body roll maybe?)
Anyone running softer tyres with b14's to share some thoughts?
Thx!

You'll be fine running grippier tyres on B14's. I ran them on my old Octavia VRS and they were fine.

 

[youngarthur]

I do not know what my tyres pressures are on track. My son comes over, Pumps/deflates the tyres, whatever,( As the grandchildren say!.) mumbles something, and out I go.