Wander on highway

[jjrbus]

Been experiencing some highway wander 0n my 02C200P, did not wander when I bought it with OE shocks and 10 year old tires. Put on new aftermarket aluminum rims and KYB shocks. A bit of wander so had it checked and front end given a clean bill of health. Took for front end alignment told me front end is tight, still that bit of wander. Thinking control arm bushings are worn but not worn out. Took back to alignment shop, great shop, old school. They found grease fitting that was dry. Greased it and gave me a clean bill of health, still wanders. I am thinking time for new control arm bushings.

Then I read what Booster posted about offset affecting handling. Can't be it but checked the net and my aftermarket wheels which I was assured mimicked the OE 8 lug Chevy wheels would be fine. So the aftermarket aluminum wheels are a 28mm offset and the OE steel wheels are 16-20mm offset. I had not thought of this before as the wheels look exactly like the OE chevy aluminum wheels, with a different offset.

Stopped and chatted with my alignment guru and he believes that the offset can cause the wander and thinks the only way to test it is to change wheels.

Have an appointment next Wed to get one more inspection\opinion on this.

Any input??