2027 Keystone Springdale Max31SUNROOM

Keystone publishes three weights for the Springdale Max 31SUNROOM: a shipping weight of 7,550 lb, a carrying capacity of 1,950 lb and a hitch weight of 830 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 Springdale Max 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 54 gal fresh, 39 gal gray and 30 gal waste, as Keystone lists them. Fresh water weighs about 8.3 lb per US gallon, so a full fresh tank is roughly 448 lb on the road before anything else is loaded. The tire size Keystone lists is ST225/75R15D.

Against the 3 Springdale Max floorplans profiled here, this one is the 2nd by Keystone’s shipping weight, in a range from 7,370 lb (29HAVEN) to 8,280 lb (3100XBR). 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 23 Oct 2026 from Keystone’s own floorplan page for the Springdale Max 31SUNROOM. That page carries no model year, so the year comes from the roster page that links it, which lists the Springdale Max 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 31SUNROOM differs from the other two Springdale Max floorplans. Most distinctive first. Each rank counts only the siblings that publish that field, and a figure most of them share is left out.

• Carrying capacity (Keystone’s term), 1,950 lb: smallest of three; next is the 29HAVEN (2,130 lb).
• Hitch weight as Keystone lists it, 830 lb: lightest of three; next is the 3100XBR (965 lb).
• Hitch weight as a share of shipping weight, 11%: smallest of three; next is the 3100XBR (11.7%).
• Exterior height, 11 ft 1 in: lowest of three; next is the 3100XBR (11 ft 3 in).
• Shipping weight (Keystone’s term), 7,550 lb: second-lightest of three, between the 29HAVEN (7,370 lb) and the 3100XBR (8,280 lb).
• Sleeping capacity, 4: second-smallest of three, between the 29HAVEN (3) and the 3100XBR (8).

Next to the 29HAVEN, the nearest lighter floorplan by shipping weight, the 31SUNROOM is 180 lb heavier by shipping weight, has 180 lb less carrying capacity, has a hitch weight 215 lb lighter, is 2 ft longer, stands 2 ft 6 in lower, has a grey tank 39 gal smaller and sleeps one more; the two publish the same fresh tank.

Next to the 3100XBR, the nearest heavier floorplan by shipping weight, the 31SUNROOM is 730 lb lighter by shipping weight, has 925 lb less carrying capacity, has a hitch weight 135 lb lighter, stands 2 in lower and sleeps four fewer; the two publish the same length, fresh tank and grey tank.

Keystone lists 3 Springdale Max floorplans for 2027. 3 have a complete Keystone figure set and no existing page here, and are profiled, from 7,370 lb to 8,280 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.

Closest sibling: the Springdale Max 3100XBR, nearest on the published figures. It differs on 2 of the 5 fields both publish (this plan first): sleeps 4 vs 8; hitch weight 830 lb vs 965 lb. They match on length, fresh tank and grey tank.

All 3 Springdale Max floorplans: Springdale Max line hub.

8 of the 18 fields this catalogue tracks are published for the 31SUNROOM. Not published: dry weight, GVWR, cargo capacity (CCC), exterior width, interior height, black tank, slide count, axle count, awning, air conditioning.

Sourcing rules: methodology.