I know only a handful here have 991 turbo, but I truly seek someone's help. I tried on ********, but no one answered my thread there. Yes, the car is railed on the road at any speed. But on the track it did understeer like a pig at sharp u-turns.
I read someone went 265 on the front and 325 on the rear, but I'm not sure what did he sacrifice in return. But I am thinking only going 265 on the front to solve the understeer and keep the rear 305. Otherwise, I'll go the GT3 RS sizes with MSC2.
Any first hand experience?
If you are trying to reduce understeer on track, you would be better off going for some suspension mods. If the stock front bottom control arms won't give you at least -2 deg camber then that is where I would start. After that, possibly a stiffer rear sway bar.
I upsized my front tires on my
boxster
by +10/10 and it helped with understeer. I'd be careful what you wish for though...you want the car to slightly understeer (front veering off compared to the rear at the limit) than oversteer (tail swinging around at the limit). Understeer is easy, predictable, and sometimes fun to control, but oversteer is random, abrupt, and dangerous.
Maybe what you want is a firmer suspension or lighter weight, opposed to getting rid of understeer.
Easy thing to do is to try is reduce the front or rear tire pressure by a good margin. This will kind of demo what wider tires would be like.
Before you modify an extremely capable car to suit an inexperienced driver, you might want to try taking professional driving lessons. Just sayin'...
