Tall Front Runners In Radials?

Look at the load rating on the tires. 165's spec'd for VW's are WRONG, WRONG, WRONG.
They will have a very hard time being safe or looking properly inflated.

A lot of these tires are only load-rated at around 900 lbs each. You need something
closer to 1300 lbs and up......then they won't look flat with 50 lbs of air in them.