986 Forum - The Community for Porsche Boxster & Cayman Owners - View Single Post

jhandy · 06-16-2009, 07:22 PM

Hi,
Could someone please help me out with my car's understeer. My current set up is the following:
2002 boxster s
HR springs with M030 factory setup
rear tires: 275/35/18 30 PSI
front tires: 245/40/18 25 PSI
new Sumitomo HTR Z III Tires x4
7mm HR spacers on all 4 sides.

Handles great, but when pushed, there is severe tire grinding understeer. The rear never lets loose.

Any ideas on a easy inexpensive fix for this? Also what causes understeer (in novice terms)

Thanks for the information,
James

06-16-2009, 07:22 PM	#1
jhandy Registered User Join Date: Nov 2006 Location: Bastrop, TX Posts: 705	understeer Hi, Could someone please help me out with my car's understeer. My current set up is the following: 2002 boxster s HR springs with M030 factory setup rear tires: 275/35/18 30 PSI front tires: 245/40/18 25 PSI new Sumitomo HTR Z III Tires x4 7mm HR spacers on all 4 sides. Handles great, but when pushed, there is severe tire grinding understeer. The rear never lets loose. Any ideas on a easy inexpensive fix for this? Also what causes understeer (in novice terms) Thanks for the information, James __________________ 2002 S Pedro rear stabilizer bar, CF strut braces, Maxspeed headers with 100 cell cats, Fabspeed cat bypass pipes, H&R springs with M030 setup, TRG rear links, EVO air intake, B&M Short shift kit, Raby IMS upgrade, Raby underdrive pulley