Dunlop SSR's pressure and driving tips please!
Discussion
Just ordered the 285 & 225 dunlop road legal track tyres you have all been talking about.
I've previously only run road tyres and am a little concerned about killing them with too much pressure / heat. Can anyone give me any tyre pressure tips. Car is standard 993TT.
Also, what are they like in the cold / wet? Safe on the road or for track (ab)use only?
I've heard about running them in by warming them up and then cooling them down. Any truth in this?
Cheers
Alan
I've previously only run road tyres and am a little concerned about killing them with too much pressure / heat. Can anyone give me any tyre pressure tips. Car is standard 993TT.
Also, what are they like in the cold / wet? Safe on the road or for track (ab)use only?
I've heard about running them in by warming them up and then cooling them down. Any truth in this?
Cheers
Alan
Alan,
My initial thoughts about them can be found here:
www.pistonheads.com/gassing/topic.asp?t=168116&f=48&h=0
Trouble is, I have nothing to compare them against because I bought my RS with the car already wearing SSRs.
At Oulton in March I started with 27-28 PSI cold and this brought them up to 32-33 PSI hot (all 4 tyres). This seemed to work OK. The back did get a little loose at one bit, so I let out a bit of air in the rear tyres to make sure I wasn't going into the mid-30's PSI.
It might be worth ringing Dunlop Motorsport about this. I have rung them on 2 occasions for advice. They were jolly helpful. I had D01Js last time round you see (on my M3).
The way Dunlop described it to me, the SSR is somewhere between a road tyre and a D01J track day "cut slick". Therefore it has fairly stiff sidewalls and square shoulders. However, not as stiff/square as a D01J.....so they won't stand being run at really low pressures like a slick. Not that the D01J is a slick, but you know what I mean.
What does everyone else think? I know Sean Dudding and a few others have been using them. It might be worth asking on the 964 RS forum of the Porsche Club GB.
My initial thoughts about them can be found here:
www.pistonheads.com/gassing/topic.asp?t=168116&f=48&h=0
Trouble is, I have nothing to compare them against because I bought my RS with the car already wearing SSRs.
At Oulton in March I started with 27-28 PSI cold and this brought them up to 32-33 PSI hot (all 4 tyres). This seemed to work OK. The back did get a little loose at one bit, so I let out a bit of air in the rear tyres to make sure I wasn't going into the mid-30's PSI.
It might be worth ringing Dunlop Motorsport about this. I have rung them on 2 occasions for advice. They were jolly helpful. I had D01Js last time round you see (on my M3).
The way Dunlop described it to me, the SSR is somewhere between a road tyre and a D01J track day "cut slick". Therefore it has fairly stiff sidewalls and square shoulders. However, not as stiff/square as a D01J.....so they won't stand being run at really low pressures like a slick. Not that the D01J is a slick, but you know what I mean.
What does everyone else think? I know Sean Dudding and a few others have been using them. It might be worth asking on the 964 RS forum of the Porsche Club GB.
Used them on my 993 GT2 at Donington a couple of weeks ago dry day got them very hot 50-55 psi good grip from the rears nice balance when backed off to 31 psi hot although a little bit of understeer creeping in when pushing on.
Pretty good on the road in the wet better than the MPSC & Corsa.
Pretty good on the road in the wet better than the MPSC & Corsa.
I've only run them on the road so far in the UK, France and Spain. I used the standard Porsche cold pressures for a GT3 - 32 & 37 (from memory). They work well on the road and are safe in the dry and wet. I've been slightly carefull in the wet (no sudden acceleration, braking or steering) but still cruised at 180 kph on a wet Spanish motorway. The SSRs seemed to clear a lot of water so they do work in the wet.
My spare,spare set of SSR track tyres arrived today.
I remember Sir Vic using them on his sublime Clubsport to good effect at Brands, so I thought they were worth buying at the current price.
AceP...to be fair I thought the guy was delivering a set of part worn Goodyear F1's to me!
I will try them out....but stacked up next to the race track refugee D01J's...the SSR's look a bit tame to me.....maybe it's me? but with a name like "Super sport race" on my tyres I expected them to at least imply I would be a little more Senna like on track!
The D01J's will have to be knackered before these things get a look in
I remember Sir Vic using them on his sublime Clubsport to good effect at Brands, so I thought they were worth buying at the current price.
AceP...to be fair I thought the guy was delivering a set of part worn Goodyear F1's to me!
I will try them out....but stacked up next to the race track refugee D01J's...the SSR's look a bit tame to me.....maybe it's me? but with a name like "Super sport race" on my tyres I expected them to at least imply I would be a little more Senna like on track!
The D01J's will have to be knackered before these things get a look in
johnny senna said:
Indeed Paul, the SSRs do have more of a tread pattern than the D01J and deeper tread at that. This should come in useful at Croft on Saturday where I am going to be driving in sleet and snow by the look of the weather forecast.
Have fun JS,,, when I said I would like to be a little more Senna like on track...I must point out I was referring To the late Ayrton,,,rather than yourself....I will try to give the slow speed spin technique a miss
aceparts_com said:
Well I can't wait to try them. I'm curious to feel how much extra grip they'll give me over normal road tyres.
Time to be sensible and knock all this sliding around on the head.
I have to say, when I saw your slidey vid, it did look fun and I suppose you get to learn the limits as to where your car breaks on destroyed rubber...however for 911 driving it doesn't strike me as practical on road,track & wallet.
clubsport said:
Indeed Paul, the SSRs do have more of a tread pattern than the D01J and deeper tread at that. This should come in useful at Croft on Saturday where I am going to be driving in sleet and snow by the look of the weather forecast.
Have fun JS,,, when I said I would like to be a little more Senna like on track...I must point out I was referring To the late Ayrton,,,rather than yourself....I will try to give the slow speed spin technique a miss
Cheeky beggar.
Man at Dunlop said drive em get em warm , sensibly and let let em cool down again ..........gives a little extra life ...........have found durability excellent after MCSP,s
They re not as feeling as the DJO1 OR 2 S in the dry and certainly not as sticky as Corsa R or MCSP S, but at current prices they re damn good value for wat u loose in times in dry , i only do track days i am not looking for ultimate grip but u certainly dont ave to go home when it rains with SSR S !!
They re not as feeling as the DJO1 OR 2 S in the dry and certainly not as sticky as Corsa R or MCSP S, but at current prices they re damn good value for wat u loose in times in dry , i only do track days i am not looking for ultimate grip but u certainly dont ave to go home when it rains with SSR S !!
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