I have learned to tune from some pretty good racers and believe my base tune is a good starting point. I seem to have a lot of understeer during the last 1/3 of the turns. I’m going to share my 69 Camaro C500 tune and would appreciate some people trying it out and letting me know how I can make it better.
Build
Race Intake
Race Exhaust
Sport Valves
Race Centrifugal Super Charger
Race Brakes
Race Suspension
Race ARB Front and Rear
Street Chassis/Sway Bars
Race Weight
Street Transmission
Sport Driveline
Race Diff
Stock Tire
245/35/19 Front Tire/Wheel
315/40/16 Rear Tire/Wheel
Cragar SS Wheels
Front and Rear Aero
5.7 V8 Engine Swap
Centrifugal Super Charger
Tires 29.5,29.5 32 psi after a few laps
Camber 2.2,1.8 Set to keep temps even
Toe 0.1,0.0
Caster 5.4
ARB 21.6,18.4
Springs 490.86,418.14 Weight X .35 X Weight Distribution X .5 = Spring Rate
Ride Height 8.0,8.0
Rebound 8.6,7.3 16 X Weight Distribution = Rebound
Bump 2.1,2.4 Rebound X .33 = Bump
Aero 100,200
Brakes 40,150
Diff 60,40
I took this for a spin and I gotta say, I wouldn’t change a thing. The build is spot on for larger tracks and the balance felt just right. If your personal preference is a little looser on exit then just stiffen the rear a little or soften the front.
I agree wit gtfoot, just a little adjustment to the springs and good to go. I most admit tho i don’t like the bigger rim up front than rear but if it works it works.
10-4. Thanks. I don’t like the bigger rim up front for looks but I was told it helps with oversteer and PI. I’ll try changing that and playing with the springs. Maybe I need to adjust my driving style some. Good input. Thanks again!
took your Camaro out on VIR grand east, has a good mix of everything, and that’s where i do a lot of my tuning… Did 3 laps, and ran a 3:00.6. nice tune, but i did have a little understeer going into corners. I had a quick play with just the rollbars, rebound and bump, and the diff.
this is what i changed.
21.89, 27.16 front and rear rollbars
lowered ride height to lowest possible.
7.1, 5.8 rebound. just took 1.5 off your settings
2.6, 2.4 bump. just added a few to the front
70%,70% diff. felt like it had better lift off oversteer.
restarted the track, 2 laps and ran a 2:58.1.
turns into corners a little easier now, letting you hold a little more speed. didn’t want to change too much, but i’d probably stiffen the springs just a little, and play around with the bump and rebound a little more. Hope this helps you a little, and that these settings work with your driving style… thats the thing with this game, it all comes down to driving style, and what settings that work with it.
This was very helpful, gentlemen. I appreciate it.
I evened out wheel size, reduced front suspension by 2 percent, and added .5 to the front rebound. Now, you can just throw the car around the track, hammer the throttle and go. I didn’t think about the wheel size. Before the updates and physics changes that was a trick to reduce PI and oversteer. I also had been working the rebound backwards.
What I changed is below.
17 inch wheels front and rear
Front ARB 21.29
Front Springs 480.6
Front Rebound 8.8
Front Bump 2.0
Raise the accel diff, rear rebound, and rear spring a bit to alleviate the exit understeer. Adding a click or two of positive rear toe can help, as well.
Hey Bokeefus. Just reading your post and was intrigued about the calculations you used to work out your springs, rebound etc. I was wondering whether you could elaborate on your workings out for your springs as I’ve tried calculating it for your build and I’m getting different numbers to yours. This just may be me being stupid which would probably be nothing new. Cheers buddy
Weight X .35 X Weight Distribution X .5 = Spring Rate
2,798 x.35 = 979.3 x .54 = 528.82 x .5 = 264.41 for front
Springs 490.86,418.14
Looks like you are correct. I’m not sure what I did. That was the method I was using but it has been pointed out to me that I was doing it wrong. That equation is for each spring. Since Forza only lets you tune front and rear you should not divide by 2.
Apparently, I messed this tune all up. I am going to go back and pick about 3 or 4 cars and retune them and start from scratch. Thanks for the help.
i thought it was pretty good… you can use maths, and calculate stuff, but i think, and what works for me, is to not follow rules, and try to just do it by what your feeling the car do… each car has a natural downforce, which comes from the body shape, which there is no way to measure,… And by not following a program, you will fail sometimes, but you also stumble on new ways of doing stuff, that you wouldn’t have noticed. You said that that Camaro was done wrong, but i got 40th on VIR grand east, without really trying, so something had to be right on it… anyway, thats my “talking even though no asked me to” done… i’ll go now… lol