The sand was topdressed at a depth of 2 cm. Treatments were arranged in a randomized complete block design with three replications for a total of 30 plots. A modified Brouwer traffic simulator was used to supply differential-slip traffic to the plots. Traffic was completed in the spring and fall to coincide with sports played during those seasons. Each traffic period was followed by a no traffic, recovery period. A Brà ¼el and Kjà ¦r 2515 Vibration Analyzer was used to measure surface hardness. The plots were evaluated after periods of traffic and recovery for quality, density, color, % living turfgrass cover, % topdressing showing and surface hardness. Results show rubber treatments were better than the non-rubber control during the year, and better than the sand topdressed treatment in the fall. Trends show that rubber particles improve the recovery of turfgrass and a buffing rubber provides the best overall performance.The turfgrass industry has developed new technologies to increase the traffic tolerance of intense traffic areas. Millions of automobile tires are discarded annually in the United States. Products from recycled tires are currently used as a topdressing amendment for athletic fields. Two sources of recycled tires for turfgrass use are crumb and buffings rubber. Crumb rubber comes from chipping whole tires and buffings rubber comes from the retread industry. Our objective in the field was to evaluate four types of rubber particles applied at two depths in comparison to a sand control topdressing, and a non-rubber treatment for traffic tolerance. All treatments were applied to a mature stand of Kentucky Bluegrass and evaluated for traffic tolerance. All rubber treatments were topdressed at a depth of 1 and 2 cm. The rubber treatments consist of a coarse and medium crumb type and a coarse and medium buffings type.