Caterpillar RD4 vs Caterpillar Thirty

Verdict: Caterpillar RD4 vs Caterpillar Thirty

The Caterpillar RD4 and the Caterpillar Thirty are both tractors — here is how they stack up on the figures that matter. Caterpillar RD4 leads on rated power with 35 hp against 31 hp. Caterpillar RD4 is the newer design (1935 vs 1925). In short: choose the Caterpillar RD4 for outright pulling power, or the Caterpillar Thirty if a tighter budget and lighter footprint matter more. Compare the full spec tables below before booking a demo.