2027 Keystone Alpine3710FL

Keystone publishes three weights for the Alpine 3710FL: a shipping weight of 15,060 lb, a carrying capacity of 2,940 lb and a hitch weight of 3,270 lb. Those are Keystone’s own terms, and this page keeps them. Keystone does not call the first figure dry or unloaded weight, does not say the hitch figure is measured dry, and publishes no GVWR for any Alpine floorplan, so none of the three is renamed here and no loaded rating is worked out from them. The trailer’s own federal weight label, inside the door, is the document that carries its UVW, cargo capacity and GVWR.

Tank capacities are 75 gal fresh, 78 gal gray and 78 gal waste, as Keystone lists them. Fresh water weighs about 8.3 lb per US gallon, so a full fresh tank is roughly 622 lb on the road before anything else is loaded. The tire size Keystone lists is 215/75R17.5H; a fifth wheel puts its pin load into the truck bed, so it counts against the truck’s payload rather than its tow rating.

Against the 4 Alpine floorplans profiled here, this one is the 4th by Keystone’s shipping weight, in a range from 12,925 lb (3100RE) to 15,060 lb (3710FL). Every figure in that comparison comes from the same Keystone page type for the same model year, so the comparison inside the series is like for like.

Every number on this page was read on 4 Nov 2026 from Keystone’s own floorplan page for the Alpine 3710FL. That page carries no model year, so the year comes from the roster page that links it, which lists the Alpine floorplans under the heading “2027 Floorplans”. Keystone notes that its website reflects the most recent production run and that features and specifications change during the year.

How the 3710FL differs from the other three Alpine floorplans. Most distinctive first. How these ranks are worked out.

• Shipping weight (Keystone’s term), 15,060 lb: heaviest of four; next is the 3910RK (14,640 lb).
• Hitch weight as Keystone lists it, 3,270 lb: heaviest of four; next is the 3910RK (2,980 lb).
• Hitch weight as a share of shipping weight, 21.7%: largest of four; next is the 3910RK (20.4%).
• Grey tank, 78 gal: smallest of four; next are the 3100RE, 3303CK and 3910RK (83 gal).
• Carrying capacity (Keystone’s term), 2,940 lb: second-smallest of four, between the 3303CK (2,885 lb) and the 3100RE (3,075 lb).
• Length, 41 ft 4 in: second-longest of four, between the 3303CK (37 ft 3 in) and the 3910RK (42 ft 10 in).
• Sleeping capacity, 6: largest of four, level with the 3910RK; next are the 3100RE and 3303CK (4).

Next to the 3910RK, the nearest lighter floorplan by shipping weight, the 3710FL is 420 lb heavier by shipping weight, has 420 lb less carrying capacity, has a hitch weight 290 lb heavier, is 1 ft 6 in shorter and has a grey tank 5 gal smaller; the two publish the same exterior height, fresh tank and sleeping capacity.

Keystone lists 5 Alpine floorplans for 2027. 4 have a complete Keystone figure set and no existing page here, and are profiled, from 12,925 lb to 15,060 lb shipping weight; the others are catalogued on this page with the reason against each. Keystone publishes shipping weight, carrying capacity and hitch weight for these trailers, and no GVWR.