DuroBay › Learn
Know your tires.
Run a tighter shop.
Charts, checklists and free templates for people who sell tires for a living. No sign-up.
MOST USED AT THE COUNTER
01
Tire reference
The charts you check with a customer standing at the counter.
REFERENCEHow to read a tire size codeP225/65R17 98H, piece by piece — plus LT and flotation sizes.4 min →REFERENCEHow to read a tire DOT date codeFour digits, three worked examples, how to log it.6 min →REFERENCETire tread depth chart, 2/32 to 12/32Inches, millimeters, sell lines and the penny test.7 min →REFERENCETire load index and speed rating chartThe full 82–126 table. Never go below the door jamb.7 min →REFERENCETire shop terms: English to Spanish glossarySixty-plus words, from llanta and rin to take-off.7 min →REFERENCELT tire load range chart: C, D, E, 10PR and 119/116C, D, E, 10PR and 119/116, read off the rule books. Match the letter.7 min →GUIDETire pressure: door placard, sidewall max and TPMS lightSet it to the door placard, not the sidewall. Then read the TPMS light.6 min →REFERENCETire rotation patterns: how often and which wayWhich pattern for which tires, how often, and when you can't rotate.6 min →REFERENCETire size conversion chart: flotation to metricFlotation sizes beside the LT metric sizes closest in diameter, math shown.6 min →REFERENCEUTQG ratings explained: treadwear, traction, temperatureTreadwear, traction, temperature. Three grades, one federal test each.6 min →REFERENCE3PMSF vs M+S: what winter tire markings meanThe mountain snowflake passed a snow test. M+S is the maker's own call.6 min →
02
Selling used tires
Grade it, price it, and know when to say no.
GUIDEHow to price used tires: margin, markup and tread bandsTread bands, real margin math, pairs and sets.4 min →CHECKLISTUsed tire grading checklistA simple A / B / C grade and every reason to refuse.4 min →GUIDEWhen a used tire's age means you refuse the saleCheck age in seconds and explain the refusal.4 min →GUIDEWhere used tire shops actually get their stockFour sources and how to inspect a lot before paying.4 min →CHECKLISTTire plug vs patch: what counts as a proper repairPlug and patch together, tread only, 1/4 inch max. Everything else is a refusal.5 min →
03
Running the shop
Racks, counts, receipts and the numbers that matter each morning.
CHECKLISTFive numbers to check every morning at a tire shopFive minutes before the phone starts ringing.4 min →GUIDEHow to organize your tire inventory racksA naming system for rows, and new vs. used.4 min →CHECKLISTA tire inventory count you can finish in an hourRack by rack, two people, then reconcile.4 min →CHECKLISTWhat goes on a tire shop receipt (and why)Every field, plus the two lines used tires need.4 min →TEMPLATEFree tire inventory spreadsheet template (CSV/XLSX)The 14 columns a small shop needs. CSV and XLSX.5 min →TEMPLATEFree tire shop invoice template (XLSX)DOT, tread depth and warranty on every line. XLSX.4 min →GUIDESell tires online without building a websiteA stock list that updates itself and a wait list by size.5 min →CHECKLISTHow to start a used tire shopSpace, equipment, first stock, licensing, month one.4 min →CHECKLISTTire registration, recalls and the TIN: dealer checklistWho registers what, the 13-symbol TIN, and where to check plant codes and recalls.7 min →
04
Software & AI
What tools can actually do for a one- to three-bay shop.
GUIDEWhat an AI tire scanner can and can't readSize, brand and DOT from a photo — not tread or damage.4 min →GUIDEStop missing calls at your tire shopFrom voicemail to an AI phone assistant.4 min →CHECKLISTTire shop software for small shopsPhone-first, Spanish, used-tire fields, no per-seat traps.4 min →GUIDEWhat used tire shop software needs to trackTread, grade, lot id, and matching singles into pairs.4 min →
Nothing matches that yet.
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Guías en tu español
Written the way each country talks — gomas or llantas, ATH Móvil or OXXO.
Tyre guides in other languages
Written for each country and its own rules, not translated from these.
UKEnglish (UK)tyres · MOT · part-wornBRPortuguês (Brasil)pneu · borracharia · TWIFRFrançaispneu · garage · vulcanisateurPHFilipinogulong · vulcanizing · treadIDBahasa Indonesiaban · toko ban · tambal banPLPolskiopony · wulkanizacja · bieżnikTRTürkçelastik · lastikçi · diş derinliğiKEKiswahilitairi · fundi wa matairi · mitumba