Trofeos are designed for 29.5-30 psi hot. It always freaks people out to start with a cold pressure of 22 psi or so but that is how these are designed to operate.

For another ask your installer how many psi it took took to seat the bead to the wheel

If you try to add camber to move the contact patch towards the inboard end of the rears you will reduce traction, and increase the ripping out of the center tread blocks that you already have begun on the rear tires.

 

That explains the front wear

That is typical for roebling fronts

 

Savy...what camber settings on a 997 car did you find worked with Trofeo?

 

Since we are rehashing the Trofeo questions again, it is important to mention they do not wear well (and are slow) when driven with high slip angles or drift style corner exits. Smooth driving results in even wear (and fast lap times).

I am running OE geometry settings on my 4.0 which are:

Front -1.40
Rear -1.50

Current front tire (top photo) and rear tire (bottom photo)

 

Thanks Mike! I was happy to hit the 1:19s first event out in the turbo. It has faster times in her.

Ok, the wear looks similar to mine for the most part. I think that the heat 95-98 degrees and only having about 20-25 min cool down between sessions led to some of the modeling that occurred with the rubber too.

I'm happy with them and I think I will go with the Trofeo Rs when they come out.

 

I'm running these on my 997.2 Turbo with 325/245. Since the turbo weighs quite a bit more would it make sense to run a bit more pressure?

 

If you are going to get a set of track wheels, why not get some more benefit out of them and get them in different sizes? You could get a set of OZ Challenge Racing wheels in 18x9/18x11 or 18x13 for about the same price and significantly lighter. 18" tires should be less costly. Currently they only have Trefeos as wide as a 295, but this is optimal for a 11" wide wheel anyways. If you stick with 19"s, I would recommend to step up to 19x9.0/19x12.0 wheels.

 

I didn't think they made the Challenge in 5 bolt. I have a turbo so I have to watch the front/rear wheel height difference for the center diff.

 

That's very little camber. You can see the outside wear on both front and rears.

 

I was concerned when I put these on that the camber might be insufficient but that is a typical wear pattern for Trofeos that are working well. If you try to move the wear inboard you get some severe feathering of the 2nd outermost and center tread blocks.

The good news about less camber is that the car is super planted under hard braking, no rear end dance. Greater camber (among other things, of course) contributes to dance.

Combined with the fact that I set fastest time of all entries (several full-on race cars on slicks) in both Club Trials and Track Trials race two weeks ago at my local track tells me they are working

All self-aggrandizement aside...lol...these tires reward a driver that keep an eagle eye on pressures and willingness to tweak alignment. As well, different wheel sizes/offsets and car weights may benefit from a different set-up. The soft compound speaks to you very quickly if it is not happy.

Ultimately the only way to answer that is with a friend and needle pyrometer

But the Trofeo tire sizes you and I both run were originally designed to be used on a GT2

 

For me to try out different tires and tweak alignment .....I need to learn how to do my own string alignment set ups.

 

My latest set of r6s are wearing at the very outer edge, in areas barely cording. They presently have 3 days, 15 hc. Most recent alignment also has 3 days, front camber -3. I am still fiddling with hot pressures but range has been 30-33 or so.

Trying to figure out this wear pattern. Alignment now out of whack? Car pushing too much? Last day was quite hot and maybe max temps were higher than i recall?

I did not even notice this until i was home, after the last day, and i take wheels off after each track day. The car actually felt great, and that day i beat my fastest time by 1.5 sec and had the most fast and consistent times ever at that track.

What else might be causing this?

 

How do they compare for speed (lap times?) ?

 

I did have my personal best at RRR by a margin of 2.3 seconds over my last Porsche. The 997 turbo has more power and AWD but my TPC turbocharged 911S weighed less. The 911S was on 235/295 R888s. I would say that at least 1.5 sec of that was tire and the other was better balance of the AWD coming out of the corners quicker. That's where I would get some power-on oversteer on the TPC 911S.