Barassa

Hi folks - I just completed a strut/rims tires replacement on my 1997 Legacy L. I got some used OB 15" rims with 205/70/15 and used complete (struts and springs) from an OB. The car had the original 14" steelies with 185/70/14's. The lift was substantial and the car looks and handles great. Much more freeboard for my bike rack and MUCH less scraping due to lack of clearance. I use a GPS to compare with my speedo and it seems to track approximately 10% lower (the speedo is lower than actual). So is there a reasonable way to correct this (I know Jeeps have a quick gear change on the speedo, but I assume this is done less frequently). Thanks! Barassa

Do the platinum NGK's have any advantage?