Was thinking about my rather damaged 48’s at Zandvoort …
They were set at 23 / 26 and felt great for as few laps - came in and dropped them back down by at least 5 psi so about 22 / 24 - went out again felt good but started to go off after about 5 laps …
So dropped them down again so about 20 / 22 hot and they felt not so good as the higher pressure …
Wear is even accross the tread however … just really scrubbed and grained
My first real day on 48’s - but all advice I have is conflicting
HAving said that felt much more “slick” than the 39’s and off line the track was terrible covered in marbles
On my side, 24 warm all across, whatever it translates to. This has been checked with a pyrometer for even temps across the surface.
On an average day that would mean 19 front and 17 rear cold.
This way the pressures will be low for the first two laps, but once they heat up, they won’t go at all for the next hour (yes, I like to do 1 hr stints whenever I can)
And completely even wear pattern. With higher pressures I get wear in the middle of the tyres mostly… or they stat going after a few laps.
The 48’s seem to be very sensitive to pressures and temps, as I remember people trying to figure them out when they first came out.
The other day at Brands (SELOC day) the tires where fine when it was overcast, but had to be dropped 3 psi when the sun came out…my Formual R’s on the elise didnt give a toss about track temp variations, but the 48’s seem to have a narrower “good performance” range
Thomas, I did mean 22front and 20 rear. I found that running higher pressures than that at the back makes the car (and me) feel nervous, particularly on bumpy roads. I guess you have better roads in Switzerland
Any idea if things will be different for the S2. manual recommends something like 26/28 cold
If it’s of any use to you guys, the Exige S2 manual(also the 111R manual…cue Elise coupe gags) the pressures are indeed stated as 1.8bar(f) & 2.0bar(r)…(26lb/27.5lb) for the A048’s…& the Bridgestone jobbies for the 111R
No doubt the S1’s run a lower pressure, but it may give a pointer for the front/rear biase