I have an 8 x 16 and MAN am I glad I didn't get a 7 x 14. ... CAN'T PUT QUADS CROSS WISE IN A 7 FOOTER ... mine is tanrem axle and I tow with a 1/2 ton short box and a Tahoe,,, LOVE IT ,,, I am so glad I went with 8 foot,,,, single axle NOT for this guy,,,, tandem all the way,,,