DOT date code
Find the four-digit week/year. Manufacturer guidance varies — follow the tire maker and your coach/trailer guidance; do not invent a universal year cutoff here.
Tires guide
RV tires age even when miles look low
Trailers and coaches often sit in sun and heat. Sidewall aging and date codes matter as much as tread depth — sometimes more.
Active corridor: Montana · Wyoming · Idaho · Washington — case-by-case beyond.
Field notes
United Mobile RV sees aged tires fail on hot pavement with “plenty of tread.” Treat calendar age as a safety limit.
What to inspect
Sidewall cracks
Ozone checking and weather cracks on the sidewall are age/UV damage. Deep cracks are a replace-now signal.
Bulges & flat spots
Impacts and long sits create damage tread depth will not show.
Spare honesty
Spares age too. An ancient spare is not a plan.
Pressure still matters
Cold inflation
Set pressure cold for the actual load — see the load/pressure chart guide. Underinflation cooks aging sidewalls.
TPMS
A good TPMS catches heat and leaks early on corridor days.
Owner checklist
- Read DOT date on every tire including spare
- Inspect sidewalls in good light
- Set cold pressure to load
- Replace on age/damage even if tread remains
Field reality on the corridor
Measure before you buy parts
Forums love parts lists. A meter, a scale ticket, or a cold pressure check usually beats a guess. Bring photos when you Prefer Text — year, make, and a clear shot of the fault beat a long thread.
DIY boundary
Owners can inspect, document, and do basic setup from manufacturer manuals. Stop when you smell burning, see structural damage, or the fix needs sealed systems, gas work, or high-current DC you are not trained for.
Prefer Text path
Text (616) 606-5277 with symptoms, photos, and location on the MT · WY · ID · WA corridor (case-by-case beyond). Trip fee quoted before we roll.
Not a substitute for on-site
This guide is education. It is not a guarantee, not a certification class, and not a reason to skip manufacturer instructions or local safety rules.
FAQ
Can I wait until the next stop?
If brakes, tires, propane, or CO are involved, no — stabilize and get help. Cosmetic and planning items can wait.
Do you stock every part?
Parts are quoted after diagnosis. We travel the corridor with common tools and meters; special-order parts are called out before work proceeds.
What does a visit cost?
Trip $75 within 30 miles then $1.50/mi each way; labor ~$150/hr with 1-hour minimum / 30-minute increments; diagnostic $175 applied if you proceed.
Where else should I read?
Use the Related links on this page for sibling guides and the matching service line. Start symptoms at /troubleshoot/ when you are chasing a fault tree.
Related: Tire pressure / load · Tires, brakes & TPMS · Best RV tires
Pricing teaser
Trip fee $75 within 30 miles, then $1.50/mi each way. Labor ~$150/hr (1-hour minimum, billed in 30-minute increments). Diagnostic $175 applied toward repair if you proceed.
Credentials (text): Victron Professional Certified Installer · weBoost Authorized Installer · Peplink Certified Associate · Dometic Professional Certified. Starlink = installs only (not a certified partner title).