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888 Tyre pressures



  Discounted 1*2 parts
Fitting my 888's soon and interested to know what tyre pressures these should be run at for road and track use.

I will be fitting 225/45/17's to standard speedline RS200 rims

Thanks
 
  Not a 320d
Seems a bit low, not that Im questioning you Fred. Those V12's you reccomended me grip well, but have shat tyre walls btw.
 

Jamie86

ClioSport Club Member
  RS175,595,205gti,172
Ermm surely you want to be starting them at the psi you want them at and them letting them down as you warm them up?

Otherwise your going to be running them under pressure?
 
  ITB'd MK1
Ermm surely you want to be starting them at the psi you want them at and them letting them down as you warm them up?

Otherwise your going to be running them under pressure?

thats what i'd do. I've kept stuff at ~30psi when hot during a track day, and they've been down at 18psi when cooled down afterwards. Just have to watch and play really
 
  Mk1 MX-5 (x3), Westy
Ermm surely you want to be starting them at the psi you want them at and them letting them down as you warm them up?

Otherwise your going to be running them under pressure?
Yeah, but they get up to temp within a couple of laps usually? So you'd be stopping every lap to let a bit out.

I've kept stuff at ~30psi when hot during a track day, and they've been down at 18psi when cooled down afterwards. Just have to watch and play really
Same here - very surprised at how much the pressures rise!
 

Jamie86

ClioSport Club Member
  RS175,595,205gti,172
Yeah, but they get up to temp within a couple of laps usually? So you'd be stopping every lap to let a bit out.


Same here - very surprised at how much the pressures rise!

Ok underinflate them and see how trashed they get within the couple of laps.. Got a few sets in my garage which I can put pics of.. :eek:

Just my experience and what I do now, but everyone seems to have different ideas..

I even saw one guy being told to got out with like 20psi in his gti6'd 205! :S
 
  Lotus Elise
aim for 30psi hot and adjust from there (that's about 25psi front, 27psi rear when cold)

I found this a good starting point, although my car was very tail happy when the tyres were cold, as Fred found out turning into crainers on an out lap
 
  Mk1 MX-5 (x3), Westy
Ok underinflate them and see how trashed they get within the couple of laps.. Got a few sets in my garage which I can put pics of.. :eek:

Just my experience and what I do now, but everyone seems to have different ideas..

I even saw one guy being told to got out with like 20psi in his gti6'd 205! :S
I'd defo err on the side of caution when it comes to tyres (for the expense more than anything!), so I'll start them closer to the recommended pressures then - if you have some old tyres kicking around that's more experience than I have :approve: Cheers man!
 
  lift number 1 @ btm
Trouble is that over inflated tyres will suffer just as much as under inflated tyres.

I normally arrive at a track day and spend the first few laps getting pressures right, then pretty much leave them be. Yes they're under pressure for the first lap, but the tyres are cold anyway. By the time they're warm enough to drive on the pressures are right too.
 

Jamie86

ClioSport Club Member
  RS175,595,205gti,172
Trouble is that over inflated tyres will suffer just as much as under inflated tyres.

I normally arrive at a track day and spend the first few laps getting pressures right, then pretty much leave them be. Yes they're under pressure for the first lap, but the tyres are cold anyway. By the time they're warm enough to drive on the pressures are right too.


Exactly it only takes a few laps to get them somewhere handy in my experience.

I'm not suggesting pump them up to like 33psi, I got for 31 front 30 rear do so 3 laps quickly check the pressures then go from there..

I'm not saying come in every 3 laps and get a pressure gauge and temperature gun it's only a trackday not a race afterall but 888's dont seem to take well to being underinflated or indeed over inflated..

But like i've said this is just my experience and I think 888's are a bit expensive to ruin by listening to people how know someone who read something that then passes it on to everyone who will listen at a trackday :dapprove:
 
  Mk1 MX-5 (x3), Westy
Makes sense - cheers! I guess it boils down to 'better to spend half an hour at the start of the day messing around with them, than lose 2 hours at the end cos they're shredded'.......
 
  lift number 1 @ btm
Exactly it only takes a few laps to get them somewhere handy in my experience.

I'm not suggesting pump them up to like 33psi, I got for 31 front 30 rear do so 3 laps quickly check the pressures then go from there..

I'm not saying come in every 3 laps and get a pressure gauge and temperature gun it's only a trackday not a race afterall but 888's dont seem to take well to being underinflated or indeed over inflated..

But like i've said this is just my experience and I think 888's are a bit expensive to ruin by listening to people how know someone who read something that then passes it on to everyone who will listen at a trackday :dapprove:

Definately, it always amazes me the amount of people who go straight out and start giving it death. Plus if you go slow for a lap you normally lose the traffic too.

Makes sense - cheers! I guess it boils down to 'better to spend half an hour at the start of the day messing around with them, than lose 2 hours at the end cos they're shredded'.......

That and having a nervous wreck of a car that won't turn once the tyres have overheated. putting them through a couple of heat cycles before you track them will help the lifespan too.
 
  Lionel Richie
Ermm surely you want to be starting them at the psi you want them at and them letting them down as you warm them up?

Otherwise your going to be running them under pressure?

doesn't really matter TBH, over/under for 2/3 laps ain't going to cause an issue

dynacup goes out with 20psi in the front when cold, never a problem
 
doesn't really matter TBH, over/under for 2/3 laps ain't going to cause an issue

dynacup goes out with 20psi in the front when cold, never a problem

This, after a few trackdays you have a rough idea of what pressures to run (obviously depending on conditions) but my Cup goes out on between 22/23psi front/25/26psi rear on a warm trackday. I've never had problems with 'shredding' them because they were cold/underinflated like some people have said in here, thats probably more driving style than the tyres being cold.
 


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