Abstract: Apparatus for sequentially loading and discharging from a trimming station, vulcanized vehicle tires of various sizes and for spinning a tire preferably while in an upright position to facilitate the removal therefrom of mold vents, flash, etc. The apparatus includes at least three parallel rollers adapted to engage the tire tread and circumpose the tire while spinning it about its axis of rotation. One of the rollers is driven, another applies suitable retaining pressure and one is retractable for discharging a trimmed tire. The spinning tire is held against axial movement by adjustable means adapted to accommodate tires of different widths. The diameter of the tire is automatically measured and the speed of rotation adjusted depending upon the diameter measurement.