Forgeline GTD1 18 quot and 19 quot what tires

[eckeph]

I'm planning to buy new wheels and have 18" in front to try and get some control over the constant overheating.

Any one that can give me some advice on what tire options there are and the difference in grip between them? I love the Khumos (when not overheating) so I would like to have something that give me the same level of grip and feel.

I only drive my ACR-e on track.

[13COBRA]

R7s.

[TKO MOTORSPORTS TEAM]

I'm planning to buy new wheels and have 18" in front to try and get some control over the constant overheating.

Any one that can give me some advice on what tire options there are and the difference in grip between them? I love the Khumos (when not overheating) so I would like to have something that give me the same level of grip and feel.

I only drive my ACR-e on track.

Over heating????

[eckeph]

Over heating????

The front tires

[TKO MOTORSPORTS TEAM]

The front tires

Blistering front tires or just plain killing them is caused by setup off or over driving car. Very common we all over drive the car sometimes amateur's and pro trying to squeeze out just a bit to much. How quickly do your tires fall off? 5, 10, 15 laps or sooner? Do you run nitro or compressed air? whats cold psi and hot psi?

[eckeph]

Blistering front tires or just plain killing them is caused by setup off or over driving car. Very common we all over drive the car sometimes amateur's and pro trying to squeeze out just a bit to much. How quickly do your tires fall off? 5, 10, 15 laps or sooner? Do you run nitro or compressed air? whats cold psi and hot psi?

I'm not killing or blistering them. They just get too hot, lose traction and understeer. I want a tire with more sidewall and more air in them so I can push on longer without having to back off to cool them down.

My setup is good, just did an alignment and set the front to 2.8 degrees camber. I'm not over driving, at least not in the sense of pushing the tires beyond their grip level. How fast they fall of depends on the track and conditions but last weekend on a 7.3km track they started to understeer after two laps. I'm aiming for 2.4 bar hot.

[jrubin80]

Also consider the Toyo Proxes RR. They are a little slower than the R7, but will last for 25-28 heat cycles.

TKO is correct, need to know more info to make a good suggestion.

[TKO MOTORSPORTS TEAM]

Im guessing your running compressed air? 2.4 bar (34psi) hot is a little high 26-28psi hot will work alot better and help tire wear and improve grip all around. If your running air hitting 26-28 hot psi ( 1.8-2.0 Bar) is going to be a little difficult because you will have to run 17 psi cold ( 1.2Bar) and definitely mark tire for rim spin to keep an eye on it. 2 laps nice and easy to get pressure first morning session after that carcass will retain heat enough for 1/2 to 1 lap pressures up . Also toe in front helps alot with tire wear. 2.8 Camber is on the higher side but still good i since you only track it. Vipers also dont hold setup very well if at all on track. Camber ,caster and toe get knocked out very easily.

Just as a reference. We run our test mule ACR-E on Kuhmos with a pro driver at Sonoma raceway 2 days, 4-5 20 min sessions per day approx 200 hard track miles, track temp 100F+ and still have some life in tires. Car stays pretty neutral for most of the day. This is just for reference and sharing a little info on what we have found that works for us.

[eckeph]

Im guessing your running compressed air? 2.4 bar (34psi) hot is a little high 26-28psi hot will work alot better and help tire wear and improve grip all around. If your running air hitting 26-28 hot psi ( 1.8-2.0 Bar) is going to be a little difficult because you will have to run 17 psi cold ( 1.2Bar) and definitely mark tire for rim spin to keep an eye on it. 2 laps nice and easy to get pressure first morning session after that carcass will retain heat enough for 1/2 to 1 lap pressures up . Also toe in front helps alot with tire wear. 2.8 Camber is on the higher side but still good i since you only track it. Vipers also dont hold setup very well if at all on track. Camber ,caster and toe get knocked out very easily.

Just as a reference. We run our test mule ACR-E on Kuhmos with a pro driver at Sonoma raceway 2 days, 4-5 20 min sessions per day approx 200 hard track miles, track temp 100F+ and still have some life in tires. Car stays pretty neutral for most of the day. This is just for reference and sharing a little info on what we have found that works for us.

Yes, I have bought your lock out plate kit but haven't had the time to install it yet It's next on my list!

Yes, I could try and run lower pressure. I just went with what Dodge recommend and think that they work great until a certain point where they drop off. Anyway, the overheating is just one part of the reason. I also need to be able to find more alternatives for the tires since Khumos is not sold here in Europe and 295/25 19" is not available with any other manufacturer. 295/30 18" on the other hand can be found at other places.

[TKO MOTORSPORTS TEAM]

Yes, I have bought your lock out plate kit but haven't had the time to install it yet It's next on my list!

Yes, I could try and run lower pressure. I just went with what Dodge recommend and think that they work great until a certain point where they drop off. Anyway, the overheating is just one part of the reason. I also need to be able to find more alternatives for the tires since Khumos is not sold here in Europe and 295/25 19" is not available with any other manufacturer. 295/30 18" on the other hand can be found at other places.

Yes tires seem to be difficult for everyone to find right now; Once the world gets back to normal it should be easier. If you decide to switch to 18" make sure brakes clear and tire size stays within 4% of original OE tire diameter so driver aids work correctly. Thank you for purchasing the parts we mfg. If you have any questions during install dont hesitate to contact us martin@tkomotorsports.com

[eckeph]

Im guessing your running compressed air? 2.4 bar (34psi) hot is a little high 26-28psi hot will work alot better and help tire wear and improve grip all around. If your running air hitting 26-28 hot psi ( 1.8-2.0 Bar) is going to be a little difficult because you will have to run 17 psi cold ( 1.2Bar) and definitely mark tire for rim spin to keep an eye on it. 2 laps nice and easy to get pressure first morning session after that carcass will retain heat enough for 1/2 to 1 lap pressures up . Also toe in front helps alot with tire wear. 2.8 Camber is on the higher side but still good i since you only track it. Vipers also dont hold setup very well if at all on track. Camber ,caster and toe get knocked out very easily.

Just as a reference. We run our test mule ACR-E on Kuhmos with a pro driver at Sonoma raceway 2 days, 4-5 20 min sessions per day approx 200 hard track miles, track temp 100F+ and still have some life in tires. Car stays pretty neutral for most of the day. This is just for reference and sharing a little info on what we have found that works for us.

Yes, compressed air.

"26-28psi hot" is that both front and rear?