Roadtec replaced the RP-150 and RP-155 pavers with two new 8-footers compliant with Tier 3 emissions standards, the RP-170 rubber-tired machine and RP-175 on rubber tracks. Caterpillar C6.6 engines increased horsepower 12 percent, and Roadtec added 40 percent more fuel capacity, putting 95 gallons on board the RP-175 and 90 gallons on the RP-170. New, hydraulically driven cooling fans reduce paver noise. New slide-out seat design and operator control layouts that had been introduced on Roadtec’s 10-foot models are on the RP-170 and RP-175.