Understeer

[bobcowan]

OK. I'll start with the basics and work up from there. I was hoping someone would say, "Oh, yeah. Common problem. Here's how to fix it."

On Sat, I was a bit dismayed about how poorly the car handled during the various exercises. But by Sunday afternoon I was actually kind of glad. It forced me to learn how to manage it. If the car had handled perfectly, I might not have learned as much.

[FredG]

I remember your old thread. I thought you were all dialed in.

Cross Weight, and stuff.

Fred

Originally Posted by bobcowan

OK. I'll start with the basics and work up from there. I was hoping someone would say, "Oh, yeah. Common problem. Here's how to fix it."

On Sat, I was a bit dismayed about how poorly the car handled during the various exercises. But by Sunday afternoon I was actually kind of glad. It forced me to learn how to manage it. If the car had handled perfectly, I might not have learned as much.

[tocheck]

How old are your tires?

[bobcowan]

Originally Posted by FredG

I remember your old thread. I thought you were all dialed in.

Cross Weight, and stuff.

For the street, it seemed to be pretty good. This is the first time I've ever driven the car in anger. Nothing like an autocross to point out the weaknesses.

The brakes are excellent. Got to be careful not to lock the brakes when traction is a bit iffy.

The rear is amazing. You really have to work at it to get the rear to step out. The rear just hooks up and goes. To rotate the car you have to lift, then blip the throttle. A very quick up-down-up. Otherwise it will just push the car in a straight line.

Fred

Originally Posted by tocheck

How old are your tires?

The front are only 3 years old, 9,000 miles, Nitto NT-05; a 200 tire. The rears are new this year. Nitto NT-05, a 140 tire.

[cycleguy55]

Originally Posted by bobcowan

The front are only 3 years old, 9,000 miles, Nitto NT-05; a 200 tire. The rears are new this year. Nitto NT-05, a 140 tire.

Older, harder tires on the front and you have understeer. Coincidence?

[1795]

The grip on the rear tires is greater than on the front (140 vs 200), which would possibly contribute as well.

[tocheck]

The width of the tire also plays a large roll.

[Grey 65]

Originally Posted by bobcowan

The front are only 3 years old, 9,000 miles, Nitto NT-05; a 200 tire. The rears are new this year. Nitto NT-05, a 140 tire.

NT-05 is a 100% crap tire.. they are sticky(ish) for maybe 2 months, then they become total blocks of ice.

What are your wheels sizes?

What are your tire sizes?

What tire pressures are you using Front and Rear?

BTW: My car is setup with a touch of oversteer (I autocross) and I do not have a rear swaybar on my car at all.

[hauss]

Originally Posted by Grey 65

NT-05 is a 100% crap tire.. they are sticky(ish) for maybe 2 months, then they become total blocks of ice.

What are your wheels sizes?

What are your tire sizes?

What tire pressures are you using Front and Rear?

BTW: My car is setup with a touch of oversteer (I autocross) and I do not have a rear swaybar on my car at all.

FyI I am not disagreeing with you just would like a tire recommendation that would be better.

[Grey 65]

Originally Posted by hauss

FyI I am not disagreeing with you just would like a tire recommendation that would be better.

To be able to give the best recommendation knowing your wheel sizes helps a lot as all tires are not available in all sizes. But all things being equal
1. Bridgestone RE-71
2a. BFG Rival S 1.5
2b. Falken Azenis RT-660

I am currently running RE-71’s
18x10.5 fronts with 285/30/18
19x11 rears with 305/30/19.