** Truck maker Paccar PCAR.O rises 1.6% to $111.65 premarket after J.P. Morgan upgrades stock to "overweight"

** Brokerage raises PT to $133 from $108, the highest among all analysts covering the stock

** New PT is a 19.3% upside to stock's last close of $111.5

** Expects margin recovery following Section 232 tariff changes and a return to positive pricing

** Says "supermajority" of tariff-related headwinds this year to be offset next year

** Competitors will need to raise prices by more than $10,000 for truck imports in U.S., even if they are able to mitigate tariff-related costs, helping PCAR win market share - JPM

** 7 of 21 brokerages rate stock "buy" or higher, 13 "hold" and 1 "sell"; median PT is $110

** As of last close, stock up 8.6% YTD

(Reporting by Utkarsh Tushar Hathi)