Howdy, will be taking delivery of a new '06 Impreza 2.5i sedan tomorrow and looking to verify some wheel info. It has the 5-bolt alloys w/ P205/55R-16 89V Potenza's RE92A rubber... which, IMHO, were less than impressive in the snow during my test drives. Thinking about swapping on a set of almost new 215/60R-16 snows I have sitting around, but I have some questions if you're inclined to help:
1.) The car has ABS and EBD, but no VDC (Vehicle Dynamic Control). I undestand that changing tire sizes in a VDC equipped car can cause havok with the system operation, and a 'max 3% rolling diameter difference or you will screw up VDC' rule-of-thumb is good practice. However, since there is no VDC on this car, what is the max diff% before ABS or EBD is effected? Or, as long as all 4 wheels/tires are the same, does it even matter much? Change in circumference would be 78.2" to 82.2", or 5.1% diff., or 60mph speedo vs. 63.1mph actual.
2.) Based on info I gathered on-site, recent Impreza models used a 5x100mm bolt pattern and +55 offset f/r. Is this still the case for the '06 model? Unfortunately, my other wheels are 5x114.3x6-1/2" so I'd need new wheels. What's the cross-applicability to other manufacturers bolt and bore wise?
3.) Last, with it's oem neg scrub radius geometry, if I change the centerline slightly by using a wider tire with a lower offset wheel and end up with zero or positive scrub, will I notice any meaningful handling deterioration... keeping in mind we're talking winter, not performance, tires here.
Thanks, look forward to being a part of the sube community.