Are Buy-3-Get-1-Free Tyre Deals Actually Good Value?
Quick answer: A genuine buy-3-get-1-free tyre deal is effectively about 25% off a set of four — good value, but only if the base price of the three you pay for hasn’t been inflated. Always compare the total fitted price of the deal against a straight four-for quote elsewhere, and read the exclusions before you assume you’re ahead.
Buy-3-get-1-free (B3G1), sometimes badged “buy 4, get the 4th free”, is the most common tyre promotion in Australia. It looks like a quarter off, and often it is. But the maths only works in your favour if the shop hasn’t quietly lifted the price of the three you pay for, and if the tyre in the deal is the one you actually want. Here’s how to judge a B3G1 offer properly. Prices and promotions are a 2026 guide — confirm current terms with the retailer.
How does the buy-3-get-1-free maths actually work?
The theory is simple. You pay for three tyres, you get four. If a tyre is $200 each:
| Scenario | Tyre cost | Effective per-tyre | Effective discount |
|---|---|---|---|
| Four at full price | 4 × $200 = $800 | $200 | 0% |
| Buy 3, get 1 free | 3 × $200 = $600 | $150 | 25% |
So a true B3G1 is a 25% saving on the set — a strong deal on the rubber. The catch is the phrase “at full price”. The discount is only real if that $200 is the genuine everyday price, not a number that was bumped up for the promotion. This is the same principle behind why the cheapest quote isn’t always the cheapest tyre.
What’s the catch with buy-3-get-1-free tyre deals?
Three things routinely erode the value:
- Inflated base price. If the three tyres are priced above their normal rate, your “free” fourth just claws back the markup. Cross-check the single-tyre price against another retailer or an online marketplace like Tyroola.
- Fitting still applies. The fourth tyre is free, but you usually still pay to fit, balance and dispose of it, plus valves. The “free” tyre isn’t free to fit — see what’s actually included in a tyre fitting price.
- Limited range. Deals cover specific brands and models. If the promo tyre isn’t right for your car or driving, a different tyre bought at a normal price can be better value.
Watch for other add-ons too — our guide to hidden fees to watch for on an Australian tyre quote lists the lines that quietly rebuild the total.
Which Australian retailers run buy-3-get-1-free deals?
These promotions rotate constantly, but the pattern in 2026 is consistent:
- Bob Jane T-Marts regularly runs buy-3-get-4th-free across brands such as Bridgestone (including Potenza), Yokohama, Kumho and its J-Trax house range, sometimes with a fuel gift card on top. Note that in 2026 Bob Jane’s B3G1 deals have moved wheel alignment to a separate charge rather than bundling it in. Full detail in our Bob Jane T-Marts prices and deals review.
- JAX Tyres & Auto runs buy-4-get-4th-free style offers on brands like Bridgestone and Hankook, alongside percentage discounts and cashback — see the JAX Tyres & Auto review.
- Tyrepower stores, being owner-operated, run their own specials including brand cashback deals; because pricing varies store to store you can often negotiate — see the Tyrepower review.
One important detail: Bob Jane’s Best Tyre Price Guarantee excludes B3G1 and other bundled promotions. You can’t stack a price match on top of the deal, so you have to decide which route is cheaper for your set.
How do you tell a good B3G1 deal from a dud?
Run this simple check before you buy:
- Get the fitted, out-the-door total for the whole set under the deal — tyres, fitting, balancing, valves, disposal.
- Get a straight four-for quote on the same or an equivalent tyre from at least one other retailer.
- Compare the totals, not the headline. The lower fitted total wins.
If the B3G1 total beats a normal four-tyre quote elsewhere, it’s a genuine saving. If they’re line-ball, the deal is really just matching the market — still fine, but not the bargain it looks. And the real comparison is always over the life of the tyre: judge it on cost per kilometre, because a cheaper set that wears out faster isn’t cheaper. If you can time your purchase, pairing a B3G1 with a sale period helps — see best time of year to buy tyres in Australia.
Bottom line: A genuine buy-3-get-1-free deal is a real 25% saving on a set and worth chasing — but only after you’ve confirmed the base price isn’t inflated and the deal tyre suits your car. Compare fitted totals, remember you still pay to fit the “free” tyre, and note that price-match guarantees usually exclude these promos.
Frequently asked questions
Is buy-3-get-1-free really 25% off?
On the tyres themselves, yes — paying for three of four is a 25% saving, provided the price of the three isn’t inflated for the promotion.
Do I still pay to fit the free tyre?
Usually yes. The fourth tyre is free, but fitting, balancing, a valve and the disposal levy typically still apply to all four wheels.
Can I use a price-match guarantee with a buy-3-get-1-free deal?
Generally no. Bob Jane’s Best Tyre Price Guarantee, for example, excludes bundled promotions like B3G1, so you choose one route or the other.
How do I know if a B3G1 base price is inflated?
Compare the single-tyre price in the deal against another retailer or an online marketplace. If the per-tyre price is higher than elsewhere, the “free” tyre may just be recovering that markup.
Are buy-3-get-1-free deals better than a percentage-off sale?
It depends on the numbers. A 25% B3G1 beats a 15% sale, but a bigger percentage discount or a cashback offer can win. Always compare the fitted total for the set.
Deals and prices are a 2026 guide only and change frequently. Confirm current promotions, brands and exclusions with the retailer. Suggested schema: Article + FAQPage.
Authority sources: Bob Jane T-Marts — Bridgestone Buy 3 Get 1 Free; OzBargain — current Australian tyre deals.
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