993 RS tyre pressures on track
- Thread starter micksummer
- Start date
PhilRS
New member
Roll bar setting for Spa tend to be (for a 964 RS) middle in the back (not full stiff) and full stiff at the front (or one off full stiff). Though it is ultimately down to driving style, these settings are those used by most regulars, for neutral behavior in the long curves, where most time is gained. Paul's will provide great turn in in slow to mid-speed corners but could be "interesting" in Pouhon, Blanchimont and Raidillon [
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ORIGINAL: PhilRS
Roll bar setting for Spa tend to be (for a 964 RS) middle in the back (not full stiff) and full stiff at the front (or one off full stiff). Though it is ultimately down to driving style, these settings are those used by most regulars, for neutral behavior in the long curves, where most time is gained. Paul's will provide great turn in in slow to mid-speed corners but could be "interesting" in Pouhon, Blanchimont and Raidillon [
Does it relate directly to a 964?...With the different rear suspension on a 993 (more compliant) I woud expect to run a stiiffer bar setting at the rear than on a 964.
micksummer
New member
same here, stayed in a B&B for just £35 on Fri, only took 1 1/2 hr to get back to Leicester on Sat afternoon!
PhilRS
New member
Ah, that could be. Can only refer to 964 RS/RSR... What I know is that one wants to get rid of corner entry understeer on typical twisty tracks (cf. Paul's set up). But on tracks with long curves where speed (100+mph) must be carried through the corner, leaving *some* understeer in the setup does help...
ORIGINAL: clubsport
ORIGINAL: PhilRS
Roll bar setting for Spa tend to be (for a 964 RS) middle in the back (not full stiff) and full stiff at the front (or one off full stiff). Though it is ultimately down to driving style, these settings are those used by most regulars, for neutral behavior in the long curves, where most time is gained. Paul's will provide great turn in in slow to mid-speed corners but could be "interesting" in Pouhon, Blanchimont and Raidillon [
Does it relate directly to a 964?...With the different rear suspension on a 993 (more compliant) I woud expect to run a stiiffer bar setting at the rear than on a 964.
this is very true vic.....you get a very good vantage point for the correct line through pouhon when sitting in the gravel trap when the dust finally settles of course !
with all the re-working at spa I wonder if they have managed to remove the brown stain off the asphalt at the top of eau rouge after your little stalling pirouette, they might even have found bits of your 'box down at bus-stop, probably worth checking with course marshall when you get there........
thanks for the info on ARB's.....
paul howells
New member
Trust me for a 993
These setting work fine at spa on Mich cups or slicks, race chassis or standard 993rs.
If racing at spa or race car for track days etc,even more important for the fast corners is less front toe and more castor,which keeps a 993 even more stable through the fast corners.
I would drive out there on the settings i have stated for dry,and then alter if you need to if its wet,or just drive carefully in the wet.
Ben vic likes going round and round
Have a good time there
These setting work fine at spa on Mich cups or slicks, race chassis or standard 993rs.
If racing at spa or race car for track days etc,even more important for the fast corners is less front toe and more castor,which keeps a 993 even more stable through the fast corners.
I would drive out there on the settings i have stated for dry,and then alter if you need to if its wet,or just drive carefully in the wet.
Ben vic likes going round and round
Have a good time there
micksummer
New member
Changed th anti-roll bars from middle frt + back, to rear full stiff, frt one from full stiff. Will try it out in Spa next wk.
BTW, anyone here going?
Do I need to soften them for the Ring? as I'm doing the Manthey Ring trackday 2 wks later.
micksummer
New member
Just go back from Spa, epic track! Very fast track and lots of really fast corners.
The set up with full stiff rear, one off from full stiff front seamed to work real well there when the track's dry. In the wet even with adjusted pressure it's like driving on ice rink! The rear was dancing around and the front wouldn't grip. The whether was changable for the whole of the 2 days, so in the end I just drove real slow in the wet concentrating on learning the lines, and save the speeding bit for when the track was dry.
Had a massive spin on Blanchimont, only on the out lap so wasn't concentrating on the line too much and turned in way way too early, ran out of black stuff on exit of B2, touch the green stuff and the car started spinning, missing the concrete wall, twice!! Luckily no damage. All caught on film.
The spin caused the rear tyres to blister, and since they're yrs old anyway I decided to change them to Toyo R888 on site ready for day 2.
The Toyo (or may be just new rubber full stop) felt much better even in the wet, and the car felt very very stable on fast corners with that setting and pressure was 32 front 36 rear hot. Just need to learning how to drive properly now....
Going down Eau Rouge, takes some nerve to turn in without even lifting! (in the dry of course!) :
The set up with full stiff rear, one off from full stiff front seamed to work real well there when the track's dry. In the wet even with adjusted pressure it's like driving on ice rink! The rear was dancing around and the front wouldn't grip. The whether was changable for the whole of the 2 days, so in the end I just drove real slow in the wet concentrating on learning the lines, and save the speeding bit for when the track was dry.
Had a massive spin on Blanchimont, only on the out lap so wasn't concentrating on the line too much and turned in way way too early, ran out of black stuff on exit of B2, touch the green stuff and the car started spinning, missing the concrete wall, twice!! Luckily no damage. All caught on film.
The spin caused the rear tyres to blister, and since they're yrs old anyway I decided to change them to Toyo R888 on site ready for day 2.
The Toyo (or may be just new rubber full stop) felt much better even in the wet, and the car felt very very stable on fast corners with that setting and pressure was 32 front 36 rear hot. Just need to learning how to drive properly now....
Going down Eau Rouge, takes some nerve to turn in without even lifting! (in the dry of course!) :
paul howells
New member
Good to hear the car handled ok,once you put new tyres on!
Its false economy to track on old tyres,it can end in tears,or is that tyres!!
Spinning on out lap,thjats as bad as cooling down lap ,good to see you missed the concrete.
Its false economy to track on old tyres,it can end in tears,or is that tyres!!
Spinning on out lap,thjats as bad as cooling down lap ,good to see you missed the concrete.
micksummer
New member
Yes I know, quite embarassing really, thought the tyres were warm enough, obviously not! Was hoping to use up the last few mm of the rear tyres (front still had nearly 8mm), but the age of the rubber that came with the car must be quite old. So the combination of old rubber, cold tyres, and wrong line of entry nearly cost me the car! What a dip stick![&o]
paul howells
New member
We all learn hopefully by our mistakes,the important thing was you and the car were ok,and you had fun.
In the wet,the poor grip from old tyres gets highlighted,and in the dry they kind of feel ok.
Its like when setting a car up ,and getting feedback about what the car is doing,should be on new or fairly new tyres.
In the wet,the poor grip from old tyres gets highlighted,and in the dry they kind of feel ok.
Its like when setting a car up ,and getting feedback about what the car is doing,should be on new or fairly new tyres.
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