High rate of speed.

Speed is already a rate.

Meters per second. Miles per hour. Leagues per year.

It’s the same as saying “High miles per hour of miles per hour.” It’s redundant.

High weight of weight. Weight is a rate. High inflation of inflation. Inflation is a rate. High price per pound for blood oranges of price per pound for blood oranges. Price per pound for blood oranges is a rate.

High rate of speed. Redundant. High speed. Exactly.

High help stamp out and obliterate redunancy per blog of help stamp out and obliterate redunancy per blog.