The months on this calendar are ranked by how deep tire promo codes actually run — the share of codes SimplyCodes verified in each month that took 25% off or deeper, pooled across every year on record and re-measured daily. The reading is cross-retailer on purpose: when one chain runs its sale is a different question from when the whole tire market discounts hardest, and only the second one tells you which month to buy in.
September is the best month to buy tires with a promo code. Across every year SimplyCodes has tracked, 14.0% of the tires codes verified in September were 25% off or deeper — the highest share of any month, and 11.5 points above the weakest month (June, 2.5%). Figures cover 1,318 tracked tires codes across the tire and wheel retailers SimplyCodes tracks, as of August 13, 2026.
- September is the strongest month for tires discounts — 14.0% of the tires promo codes SimplyCodes tracked that month were 25% off or deeper, against 93 codes checked.
- October is the runner-up at 12.0% — worth knowing if you miss September, and the reason this calendar is worth reading past its headline.
- June is the weakest month at 2.5% — a 11.5-point gap from September. Buying tires in June means shopping the year's thinnest discount pool.
Browse every verified tire and wheel promo code on SimplyCodes — the full catalog behind this calendar.
Deep-discount share = the share of that month's tracked tires promo codes that were 25% off or deeper · bar = that share relative to the strongest month · codes checked = the denominator behind each share · — = fewer than 3 retailers contributed that month, so no share publishes · free ship / free gift = at least one such offer verified in that month.
All years on record of tires verification data across the tire and wheel retailers SimplyCodes tracks, grouped by calendar month · snapshot as of August 13, 2026
Methodology
How SimplyCodes verifies codes. Behind every figure in this live data study is the SimplyCodes verification system. Coupon codes are tested at real checkout before they are listed, through three independent layers: daily automated testing, where headless browsers runs headless browsers through real checkout flows and records whether a discount actually applies. A human verification network of 10,000+ verifiers submits screenshot-and-timestamp proof. And a real-time fleet signal, where live checkout outcomes feed back into the engine. The calendar below summarizes that verification history month by month.
How this calendar is built. we group every tires promo code SimplyCodes has checked at the tire and wheel retailers SimplyCodes tracks by the calendar month it was verified in — so "September" means every September on record, not one year's. For each month we report the share of those codes that carried a discount of 25% off or deeper, alongside the number of codes behind the share. Only percentage-off codes are counted, because fixed-amount offers are not comparable across price points. Percentage claims of 95% or more are excluded as implausible. And a month contributed by fewer than 3 retailers publishes no share at all
Cite this data
September is the best month to buy tires with a promo code: 14.0% of the tires codes SimplyCodes verified in September were 25% off or deeper, 11.5 points above the weakest month (June).
According to SimplyCodes verification data, September carries the deepest tires discounts of any month — 14.0% of tracked tires codes were 25% off or deeper, versus 2.5% in June.
Frequently asked questions
When is the best time to buy tires?
The calendar above names the strongest month, its share of deep codes, and the date the snapshot was taken. Across every year SimplyCodes has tracked, deep tire codes have clustered in the second half of the year and thinned out from winter through early summer, so a first-half purchase draws from the year's shallowest code pool.
What month are tires cheapest?
Cheapest and deepest-discounted are not the same claim, and this study only makes the second one. It ranks months by the share of verified tire codes running 25% off or deeper across the tire and wheel retailers SimplyCodes tracks. Tire list prices move with rubber costs and model changeovers that no coupon feed can see, so treat the peak month as the best code window rather than a guaranteed low price. The retailers behind it are Discount Tire, Tire Rack, Priority Tire, Belle Tire, Tire Agent, SimpleTire, Goodyear, Tires Easy, Big O Tires, Midas and the rest of the sector.
Do tire retailers run promo codes at all, or only rebates?
Both, and the split changes how you plan a purchase. Tire sellers lean harder on mail-in rebates, installation bundles and mounted-price cuts than most retail sectors do, which is why deep tire codes are rarer than the buying guides imply. The codes that do land are real and verified. There are simply fewer deep ones in a typical tire month.
Does a deep tire discount mean the code will work at checkout?
They are separate questions. Depth is how much a code takes off, and reliability is whether it still applies at checkout — the Health Score (SimplyCodes' 0–100 measure of how likely a code is to work at checkout) on each code covers the second one. This calendar reads depth only, and each retailer's own SimplyCodes page carries its current working codes.
