Depending on the actual 15" tire you are thinking of there is decent middle ground.

Some examples.

195/45R15
205/50R15
225/45R15
245/40R15

not gonna find a 60 or 70 aspect ratio in a high performance tire though.


They say there are no such thing as a stupid question.
They say there is always the exception that proves the rule.
Don't be the exception.