Fontana & San Bernardino, CA — 40+ Years Strong
YOUR TRUCK DOWN?
WE'RE ALREADY ROLLING.
Heavy-duty truck and trailer repair, diagnostics, and 24/7 roadside assistance — built for fleets, owner-operators, and every major brand on the road.
NO REPAIR, NO CHARGE
If we don't fix it, you don't pay. That's our word.
What We Fix
EVERY SYSTEM. EVERY BRAND. NO GUESSWORK.
TRUCK REPAIR
Full-service diagnostics, engine work, and repair for all major heavy-duty brands — Freightliner, Volvo, Kenworth, Mack, Peterbilt, and International.
TRAILER REPAIR
Structural, electrical, and mechanical repair for dry vans, reefers, and flatbeds. DOT inspections and preventive maintenance included.
ROADSIDE ASSISTANCE
Broke down on the 10, the 15, or anywhere in between? Our mobile units roll 24 hours a day, 7 days a week. No exceptions.
DIAGNOSTICS
Computerized engine diagnostics that find the real problem the first time — not the expensive guesswork other shops charge for.
TIRES & BRAKES
Tire replacement, rotation, and full brake system service built for the weight and mileage heavy trucks actually carry.
About Us
40+ YEARS UNDER THE HOOD.
Best Bro’s has been keeping Inland Empire trucks and trailers on the road since 1986. What started as one shop is now two — Fontana and San Bernardino — built to serve owner-operators and fleets across every major heavy-duty brand.
We're not the shop that strings out a repair. We diagnose it right, fix it right, and back it with a real warranty — because a truck that isn't moving is a business that isn't either.
NO REPAIR, NO CHARGE
If we don't fix it, you don't pay. That's our word.
Brands We Service
Why Choose Us
CERTIFIED TECHNICIANS
Every truck is worked on by certified diesel techs, not trainees.
MOBILE & ROADSIDE UNITS
We come to you, day or night, wherever your truck goes down.
ALL MAJOR BRANDS
Freightliner, Volvo, Kenworth, Mack, Peterbilt, International — we know them all.
WARRANTY ON REPAIRS
Every repair we make is backed by our warranty. No fine print.
FLEET ACCOUNTS
Priority scheduling and account billing for fleet operators.
NO REPAIR, NO CHARGE
If we can't fix it, you don't pay for it. Simple as that.
Find Us
TWO SHOPS. ONE STANDARD.
SAN BERNARDINO
4.6★ (45)1105 S Waterman Ave, San Bernardino, CA 92408
Shop: 8:00 AM – 7:00 PM, Daily
Roadside: Open 24 Hours — Every Day
FONTANA
4.2★ (128)10427 Hemlock Ave, Fontana, CA 92337
Shop: 8:00 AM – 7:00 PM, Daily
Roadside: Open 24 Hours — Every Day
Customer Reviews
WHAT DRIVERS SAY.
San Bernardino · 45 reviews
Fontana · 128 reviews
“Broke down at 2 AM outside Fontana and had a mobile unit out fast. Got us back on the road same night.”
R. Delgado — Owner-Operator
“We run a small fleet and these are the only guys we trust with our Freightliners. Fair pricing, honest diagnostics.”
M. Okafor — Fleet Manager
“Been coming here for years. They actually explain what's wrong instead of just running up the bill.”
T. Vasquez — Owner-Operator
Get In Touch
NEED A HAND? WE'RE ON IT.
Call Direct
Roadside Assistance: Open 24 Hours — Every Day