i just got 205/50/16 from tire rack.com... (yoko avs es100)
the car seems to have body roll that it didnt before. I assume it is the sidewall folding.. any input or anything that can help? more psi in the tire? anything! help !!

 

that's called grip!

 

I had the same question when I went from the 16" runflats to 18's. I got some answers, here's the thread I think: https://www.northamericanmotoring.co...ad.php?t=49544

 

thank you! i do hope it only is a rear swaybar....


some one said somthing about the tire load.. where can i find out what my tire load is when looking at my tire?

 

Whats your cold air pressures?

Alex

 

34 fronts 32 rears.

I viewed the other forum (drivetrain) and it seems this problem can be corrected with a rear sway bar. personally i think it is the tire rolling over (weak side wall) under heavy cornering..

but, then again, what do I know

 

Alex, what size tires are you running on your Kosei's(what size rims too), and are you lowered?
What do you do about not having runflats?
And what tire pressure are you running?

 

yeah it's probably the sidewalls rolling over. the runflats have a incredibly stiff sidewall.. try more air in the tires.

 

I switched from the stock run-flats w/ 16" v-spokes to SSR 16x7.5" rims and 205/50/16 Goodyear F1 tires, and the difference was fantastic. Ride quality of the car has improved dramatically for me, and I notice no performance issues, if anything it is only better. I am running 36 psi front and rear at the moment.