BRISTOL, Tenn. — NASCAR postponed the Cup Series race at Bristol Motor Speedway because of heavy rain, pushing the event to 1 p.m. Monday.

Weather has been a problem all weekend at Bristol, where Friday qualifications were washed out. On Saturday, the Xfinity Series race had a lengthy stoppage for rain.

Points leader Kyle Larson will start on the pole next to Chase Elliott.

Bristol officials this year applied a VHT resin to the track surface that is intended to enhance grip. But the nonstop rain has washed away most of the tire rubber accumulated through three practice sessions.

It’s unclear if both the preferred bottom lane and top line will work Monday. If only one lane works, it could turn into a throwback Bristol race in which bumping is the only way to pass a car.

Larson said he expected NASCAR to call a competition caution early in the first stage Monday to check tire wear.