I'm thinking of changing from 18" to 17" on my people-mover for comfort reasons (less noise), however when i initially upgraded, I felt that turning radius was sharper with the 18" upgrade - i'm not sure if its entirely new to the wider 18" tires or better quality ones (18" high performance vs comfort GR30 on the 17").
Possible to downgrade from 18" to 17" and keep current over/understeer characteristics ?