What do R-1, R-2 and R-3 mean in Big Bear?

R-1 requires chains on all vehicles except passenger cars and light trucks under 6,000 pounds with snow tires on two drive wheels. R-2 requires chains on all vehicles except 4WD and AWD with snow tires on all four wheels. R-3 requires chains on all vehicles with no exceptions and usually precedes a full closure.

← Big Bear in Winter

Do You Need Chains to Drive to Big Bear?

Q: Do I need chains to get to Big Bear?

You must carry chains any time you drive to Big Bear in winter. Whether you have to fit them depends on the chain-control level in effect: a two-wheel-drive car needs them at R-1 unless it has snow tires on both drive wheels, AWD and 4WD vehicles with four snow tires are typically exempt through R-2, and at R-3 every vehicle must chain up.

Getting up the mountain is the part most first-timers underestimate. Here's the short answer, then what the chain-control levels mean for your car and which road to take.

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2026–27 opening update — checked September 30, 2026. BBMR’s earliest possible opening is November 21, not a confirmed opening day. Check the resort’s current schedule. Opening dates and available terrain depend on conditions. Check resort opening information and Caltrans QuickMap before you travel. A season label is not a live operating report.

Chain guidance checked September 30, 2026 against Caltrans chain controls. Follow posted signs and checkpoint instructions; this is not a live road report.

The short answer

In winter, carry chains every time. Whether you have to actually put them on depends on the chain-control level in effect when you arrive, and that can change within the hour.

Passenger car/light truck under 6,000 lbs: at R-1, snow tires on at least two drive wheels may exempt you from fitting chains, but you must carry them. Towing has additional requirements.
AWD or 4WD with snow tires on all four: usually exempt through R-2 — but you still must have chains in the vehicle.
Anyone, at R-3: chains on, no exceptions.
No snow in the forecast? Carry them anyway between roughly November and April. Controls go up on roads that were clear that morning.

The one rule everyone forgets: whenever chain control is in effect, every vehicle — including 4WDs exempt from installing them — must carry chains in the car to enter the control area. Mountain conditions change fast and controls can go up within the hour, so treat chains as mandatory cargo all winter, even on a clear, sunny day. No chains can mean a ticket or being turned around at the checkpoint.

For heavier vehicles or towing, check Caltrans chain requirements. Vehicles towing trailers need chains on a drive axle during controls; trailers with brakes need chains on at least one axle. Follow posted signs and CHP/Caltrans instructions, which take precedence over this summary.

What R-1, R-2, and R-3 mean

Caltrans posts one of three chain-control levels on the highways into Big Bear. The higher the number, the stricter the rule:

Level	What it means	Are you exempt?
R-1	Chains required on all vehicles…	…except passenger cars & light trucks under 6,000 lbs with snow tires on 2 drive wheels.
R-2	Chains required on all vehicles…	…except 4WD/AWD vehicles with snow tires on all four wheels (carry chains anyway).
R-3	Chains required on all vehicles.	No exceptions — even 4WD. (R-3 is rare and usually precedes a closure.)

These exemptions depend on vehicle weight, tires and towing. Carry chains and follow posted controls and checkpoint instructions.

Which road to take

Hwy 330 → Hwy 18 (via Running Springs)

The most common route from San Bernardino / the I-10 corridor. Steep and curvy; expect chain control here first in a storm.

Hwy 18 (via Lucerne Valley)

The "back way" from the high desert. Often the driest approach because it climbs the north/east side — a good storm-day alternate.

Hwy 38 (via Redlands / Angelus Oaks)

The longer, gentler grade many RVs and nervous drivers prefer. Check live restrictions; the repair history below is not a current road report.

Highway 38: check current restrictions. Storm damage closed it from September 2025; it reopened 24 December 2025 and ran weekday-only closures into 2026 while repairs finished. The August road report is historical. Use Caltrans QuickMap immediately before departure for current restrictions on all three approaches. Full route comparison →

Check live conditions

Caltrans QuickMap — live chain controls & closures
Caltrans road info: 1-800-427-7623
Big Bear Mountain Resort's road-conditions page for resort-bound updates

Chain-up tips

Caltrans says chain installers cannot sell or rent chains. Arrange suitable traction devices before travel; ask the installer for a receipt and badge number.
Practice putting your chains on once in the driveway before the trip.
Rent or buy the right size for your tires; keep gloves and a headlamp in the car.
Drive slow (25–30 mph) on chains and leave big gaps.

Made it up the hill? Sort parking next: ski-resort parking passes & reservations · free parking & the shuttle lots.

Common questions

Do I need chains to get to Big Bear?

You need to carry them any time you drive up in winter. Whether you have to fit them depends on the control level: R-1 snow-tire exemptions apply to passenger cars and light trucks under 6,000 lbs; R-2 exemptions apply to AWD/4WD with four snow tires. Towing requires additional chains, and at R-3 everyone chains up.

Do you need chains for Big Bear with 4WD?

A 4WD or AWD vehicle with snow tires on all four wheels is normally exempt from fitting chains at R-1 and R-2 — but it is not exempt from carrying them. Officers at the checkpoint can turn you around for having none in the car, and at R-3 the exemption disappears entirely.

Is chain control in effect right now?

We can't tell you in real time and neither can any guide — controls go up and come down within hours. Check Caltrans QuickMap or call 1-800-427-7623 the morning you drive.

Can I rent chains instead of buying them?

Confirm rental availability with a shop before leaving home; this guide has not verified a current rental supplier. Caltrans says roadside chain installers cannot sell or rent chains. Bring traction devices suitable for your vehicle and tire size, following the vehicle manufacturer’s instructions.