250-500cc Wr300 gas milage-what's normal?

I got the oversized tank(3gallon) and on a long ride hit reserves(1 gallon) at 64 mile mark.so I guess I am getting aprox 32 miles a gallon. Is that good, bad, average?

I have a WR250 but 32 mpg sounds pretty good to me. I've been riding tight singletrack with some buddies who would claim that we had gone about 45-50 miles and I would still have some fuel in my stock 2.6 gal tank which would be on par with what you are saying. My odometer got a mind of it's own after about 125 miles so I have to go by what riders in my group are saying.

ive never tried em out but ive heard there are odometer type apps for your phone

I should have prefaced it with saying my trail tech voyager is my odometer. And I have found it spot on with my truck

Around Moab on technical 1st and 2nd gear trails (Sovereign Trail) and some 5th gear on the pipe sand washes mixed in I'm getting right around 40 mpg. I drained the tank back into my fuel can to check. I'm using a trail tech vector, stock Mikuni and exhaust on my WR300. Motul/91 octane pump gas 50:1, running slightly rich with spooge but super crisp throttle and brown plug with no hesitation anywhere.

I get about 15 mpg racing Yes only 15mpg also about the same on my CR 165 A 3 gall tank get about 43 miles

I get about 16mpg racing here in the North East......maybe 18-20 just playing around (144 BTW)

38 mm carb is a 38 mm carb and mains are about the same if not the same. True we are on the main more but I never had a dirt bike that got better than 20-22 MPG EVER.

I got 58 miles out of my stock 300 tank before hitting reserve on single track. Pretty consistent around that number. In the faster desert terrain, i ran out once at 40 with lots of wot gas burning.

I did the Desert 100 this year on my WR 300, which consists of 2 50 mile laps through the desert w/a mix of terrain; e.g. open desert, single track, rock gardens, and whoops. Lot's of muddy sections this year too. I have a stock 2.5 gal tank and needed a complete refill after each lap, so that's 50 miles on tank, or 20 mpg. In fact I ran out of gas w/in 100 feet after crossing the finish line and had to push my bike a few hundred yards to my truck

Great info guys thanks! 50 mile range on stock tank seems to be the concensus.

I get about 20mpg on regular tightish single track on my PWK equipped Wr250 and 19ish on my TMX'd CR135.

Make SURE your float height does not allow gas to pour from the carb when liened over in a turn or in whoops.

I am sure it depends on the type of riding and the speed of rider. With my rejetted wr 300 with the tmxx carb I was at 60 miles when I had to go to reserve. That was in the desert with a little bit of everything. But I am a cruiser, not a lot of wot.

Too high a float level will pour gas all over the ground as you ride.

I went from 15 to 19mpg by just a float adjustment....2mm less.

A PWK carb helps too.

Unless you are putting down a road at part throttle, you are not getting 40 mpg or so. Running tight to flowing woods with some road connectors, I am getting 20 mpg or 50 miles to the tank on my 09 WR250. I have an ICO Checkmate.