Frequently Asked Questions

Check the sticker on your driver's door jamb (recommended) or the sidewall of a tire you have on now, for example 225/65R17. We don't look sizes up by year, make and model yet: licensed fitment data has given drivers the wrong size, and its cost would only raise your tire price. We're building our own fitment table instead.

Yes — all three are in the catalog. For Colorado drivers we generally suggest all-season for everyday use, and dedicated winter tires if you are in the mountains regularly.

Our catalog is drawn live from our distributors and changes with what is actually available, so the brands you see are the brands we can genuinely deliver. Search your tire size to see current options and pricing.

Absolutely. Give our AI tire assistant your tire size and it considers your driving habits and Colorado's mix of dry highways, wet roads, and mountain snow to recommend the best options.

When you add local install (Denver metro) at checkout, it includes professional mounting, computerized spin balancing, TPMS relearn, torque to spec, and old-tire disposal.

In the Denver metro you pick your install shop at checkout and the price you see includes their work — nothing is added at the counter. Outside Denver we ship to you and you arrange installation locally.

That depends on your shop and how busy they are — they schedule the appointment with you once your tires arrive and can tell you what to expect then.

We accept all major credit and debit cards, Apple Pay, and Google Pay through Stripe.

Pricing is wholesale-direct retail with no haggling. Local install in the Denver metro is priced separately at checkout — what you see is what you pay, no hidden fees.

Tires and wheels carry their manufacturer's warranty. TREAD OS does not offer a warranty of its own.

TREAD OS is online-first. We ship nationwide, except for in-stock wheels marked "Denver metro delivery only", which are delivered locally in the Denver metro. We route Denver-metro orders to an approved partner shop for installation — the shop confirms your appointment. There is no walk-in storefront.

You can shop and order online 24/7. If you choose local install, your shop arranges the appointment with you directly once your tires arrive.

Order online anytime. If you choose local install in the Denver metro, your shop contacts you to schedule once your tires arrive — no appointment needed up front.

Call or text us at (720) 439-0188, email support@tread-os.com, or use our AI tire assistant on the website for instant answers about tires and wheels.