120 Forest Service, 44 BLM and 15 National Park Service. 122 take reservations
Winter winds the State Climate Office calls frequent 5
30 to 40 mph
With gusts to 50 or 60
Tires for gravel, mud and the chain law
Tire choice is partly a legal matter here. Under Level 1 of Wyoming’s chain law, travel can be limited to vehicles with chains, adequate snow tires or all-wheel drive. Under Level 2 it is limited to vehicles with chains, or all-wheel-drive vehicles on adequate mud and snow or all-weather-rated tires.
Off the highway the problems are sharp gravel and sudden mud: WYDOT says even light precipitation can make the Red Gulch/Alkali byway impassable. Check the spare before you leave pavement, as WYDOT advises, make it a full-size one, and ask a tire shop about load rating for the weight you really carry.
Tires are the only part of the vehicle that touches the ground, and on a loaded rig they work close to their limits. A good tire shop starts with load rating and size, then tread. It will also tell you when the tire you want will rub, need different wheels or throw off your gearing.
Expect help with
01Choosing a tire by load, terrain and season
02Wheels with the right offset and load rating
03Mounting, balancing and tire pressure sensors
04A matching full-size spare
05Alignment, rotation and repairs
How to choose tires for overland travel
Tread pattern is the last decision, not the first.
01Match the load rating to your real axle weights, not to the badge on the fender.
02All-terrain tires suit most overland travel. Mud-terrains are louder, heavier and wear faster, and earn it only in real mud and rock.
03Buy five. A matching full-size spare that you rotate in is worth the money when the nearest tire shop is a day away.
04Check the wheels too. Wheels have load ratings, and the wrong offset stresses bearings and rubs.
05Ask whether the shop can move or reprogram your tire pressure sensors.
What to have ready before you ask for a quote
A tire quote is quick when the shop knows what the tire has to carry.
01Vehicle, current tire size and wheel size
02Lift height, if any
03Loaded weight, or a list of what is on the vehicle
04Where you drive most: pavement, gravel, rock, sand, snow
05A budget range for five tires
Questions people ask
What does load range mean?
It describes how much weight a tire can carry at a given pressure. Heavier builds, vans and truck campers usually need a higher load range than the vehicle came with. The tire's sidewall and the placard in the door jamb are the places to start, and a tire shop can work through the numbers with you.
How big can I go?
Every platform has a size that fits at stock height, a size that fits with a modest lift, and a size that needs trimming and gears. Tell the shop your lift and wheels and ask what fits without rubbing at full steering lock and full compression.
Should I air down?
On washboard, sand and rock, lower pressure gives a better ride and more traction and is easier on the vehicle. It also means you need a way to air back up before pavement. How low depends on your tire, your weight and your speed, so ask your tire shop and start conservatively.
How high is Wyoming?
From Sheridan at 3,748 feet to Gannett Peak at 13,804.
Altitude decides what your engine, your brakes and your lungs have to work with, and how late in the year the passes open.
2,0004,0006,0008,00010,00012,00014,000
Feet above sea level
Towns
PinedaleSouth end of the Wyoming Centennial Scenic Byway, on US 191 under the Wind River Range. BLM and Bridger-Teton offices.7,179 ft
LaramieOn I-80. Highway 130 runs 30 miles west to Centennial, where the Snowy Range Scenic Byway enters the forest.7,165 ft
KemmererBLM field office and a Bridger-Teton ranger district. The Big Spring Scenic Backway runs from here to Cokeville.6,955 ft
DuboisNorth end of the Wyoming Centennial Scenic Byway, on US 26/287 below Togwotee Pass. Shoshone National Forest district office.6,934 ft
RawlinsOn I-80. Its BLM field office manages the Seminoe to Alcova byway, which leaves the interstate at Sinclair, exit 219.6,796 ft
SaratogaWest end of the Snowy Range Scenic Byway. The Forest Service district office here covers the Sierra Madre and the west side of the Snowy Range.6,789 ft
Rock SpringsOn I-80 with a BLM field office. The road to the Killpecker Sand Dunes leaves US 191 to the north, and the BLM’s 24-mile Pilot Butte Wild Horse Scenic Tour starts here.6,388 ft
JacksonBase for Grand Teton. The highway north to Flagg Ranch is plowed all winter. The Forest Service says camping nearby often fills by late morning in summer.6,238 ft
CheyenneState capital, where I-25 crosses I-80. The BLM’s Wyoming State Office is here.6,092 ft
LanderAt the foot of the east slope of the Wind River Range. Shoshone National Forest district office and a BLM field office.5,356 ft
CasperBLM field office. The South Bighorn/Red Wall byway starts 13 miles northwest on US 20/26, and Alcova is 30 miles out on Highway 220.5,105 ft
CodyShoshone National Forest headquarters, about 50 miles from Yellowstone’s East Entrance. The Chief Joseph byway leaves Highway 120 sixteen miles north.5,000 ft
BuffaloEast end of the Cloud Peak Skyway, US 16, over Powder River Pass. Full services and a BLM field office.4,640 ft
WorlandHome of the BLM field office that manages Red Gulch/Alkali. Full services west of the Cloud Peak Skyway.4,065 ft
GreybullAll services for the Red Gulch/Alkali byway. The turnoff is 11 miles east on US 14.3,794 ft
SheridanFull services for the Big Horn Scenic Byway, US 14, which climbs west from Dayton to Granite Pass.3,748 ft
Passes, high roads and summits
Gannett PeakThe highest point in Wyoming, in the Wind River Range. No road to the top13,804 ft
Cloud PeakThe highest point in the Bighorn National Forest, by the forest’s figure13,167 ft
Medicine Bow PeakAbove Snowy Range Pass on Highway 13012,013 ft
Beartooth PassBeartooth Highway (US 212): Red Lodge, Montana, to Cooke City and Yellowstone’s Northeast Entrance, across the northwest corner of Wyoming10,947 ft
Snowy Range PassSnowy Range Scenic Byway (WYO 130): Centennial to Saratoga, across the Medicine Bow Mountains10,847 ft
Powder River PassCloud Peak Skyway (US 16): Buffalo to Ten Sleep, across the southern Bighorns9,666 ft
Togwotee PassUS 26/287 between Dubois and Moran Junction, on the Wyoming Centennial Scenic Byway9,658 ft
Granite PassTop of the Big Horn Scenic Byway, US 14 between Shell and Dayton9,033 ft
Pass, road and summit elevations are the figures published by the agency that manages them. Town elevations are the town’s or county’s own
figure where it publishes an exact one; the rest are from the U.S. Geological Survey (3D Elevation Program at the place’s official coordinates),
retrieved September 18, 2026. Every source is listed at the foot of the page.
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