T1R is a much better tyre than the Proxes 4.
One of the great all-rounders; good performance, good life, reasonable price.
V tread pattern doesn't really affect tramlining.
That's caused more by a combination of tyre width, car setup and bad roads (eg. high crowns).
What the V tread and corresponding large void area does affect is straightline stability and performance when the tread heats up.
Not recommended for trackwork unless you are Mr T.Rev, he's the ONLY guy I've ever seen go really fast on T1Rs.
;D