After plenty of time on Forza, I’ve finally taken the plunge into tuning… My beloved Lancia Delta in class S. I started with my basic tune which has the gearing and diff sorted and ran some laps around the Nurburg GP circuit. My best time was 2.03.4.
After watching the replay, telemetry and reading the tuning guide on here many times it started to make a little sense. I was aimimg to get rid of some turn in understeer. Firstly the tire temps were all over the place, outer was 20* hotter than the inside on the front and they were running too hot pretty much constantly, around 220*. So after adjusting the pressure to 30psi and setting the camber correctly I ran a few more laps, only managed to knock 2 tenths of a second off my best lap, but was far more consistant on consecutive laps
Looking at the telemetry again the tire pressure’s when warm is knocking on 36psi and I still wanted to keep the fronts cooler, so I added another .5psi, this has kept them cooler, but has brought back understeer, I’m guessing because they are too hard.
My question, Is there another way of keeping tire temperatures low without increasing pressure?
thanks
oops, realised I should have put this in the tuning forum. Can you move it for me.
Tire width is max, but I’m running standard rim sizes, I tried the larger rims but found it to have a negative effect on handling. Is this common due to the extra unsprung weight or is it more set up issues?
The larger rims usually increase unsprung weight (bad) and decrease tire aspect ratio (good or bad depending on situation). Generally speaking a high aspect tire has more compliance since the tire itself acts like a spring. A low aspect tire, by contrast, is more responsive. Personally I only really see and advantage in running larger rims in old muscle cars due to the high aspect ratio tires they have stock or to drop the class of car just over the limit.
When you said the car understeers, where does it understeer? If it’s in general, everywhere through the corner, that can be fixed with anti rollbars.
I’ll stick with the standard rim sizes as its what i’m used to. It was mainly turn in and mid corner understeer, I put it down to the camber change when the suspension is fully compressed, stiffened up the rear ARB which has helped, but perhaps lost a little rear grip when pushing hard. I haven’t touched spring or dampers yet so that will be the next area to explore. Does anyone have any handy do’s and donts?
Exactly. However, it’s what everyone does on the leaderboards for lower class cars. The extremely bizarre thing is that some cars don’t even suffer damage from these settings when it’s turned on.
Wow, what a difference getting the tune right makes! Gone from making up the numbers to been race contender in the punlic lobbies. Even suprised myself on citcuits where I thought I’d struggle. No where near leader board top times but respectable enough for the little “grale”. Thanks for all the advice.