Caterpillar RD4 vs Caterpillar Thirty-Five

Verdict: Caterpillar RD4 vs Caterpillar Thirty-Five

The Caterpillar RD4 and the Caterpillar Thirty-Five are both tractors — here is how they stack up on the figures that matter. Caterpillar Thirty-Five leads on rated power with 40 hp against 35 hp. Caterpillar RD4 is the newer design (1935 vs 1932). In short: choose the Caterpillar Thirty-Five for outright pulling power, or the Caterpillar RD4 if a tighter budget and lighter footprint matter more. Compare the full spec tables below before booking a demo.