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The 4/32″ Rule: Tire Tread Depth for Lease Return

Your tires can be perfectly legal and still fail your lease inspection. Here's the standard that actually matters, how to check it in 30 seconds, and what it costs if you ignore it.

Short answer: Most lease programs require at least 4/32 of an inch of tread depth on every tire at return — double the 2/32″ legal minimum for driving. BMW Financial Services publishes this standard explicitly: below 4/32″, you get charged. The fastest check is the quarter test: stick a quarter upside down in the tread groove. If you can see the top of Washington's head, you're at or below 4/32″ and the tire won't pass.

4/32″ vs 2/32″: two different numbers

Number	What it is	Who enforces it
2/32″	The legal minimum to drive on public roads in most states	State law
4/32″	The lease-return minimum — twice the legal floor	Your lessor, at inspection

Confusing the two is the single most common way people get hit with tire charges at turn-in. Your tires can pass a state safety check and still cost you hundreds at lease end.

Why 4/32″? It’s about wet grip, not legality

Below 4/32″, a tire's ability to evacuate water falls off sharply — stopping distances in rain grow, and hydroplaning risk climbs. Lessors want returned cars they can certify and resell, so they hold tires to a standard well above "won't get you a ticket."

The quarter test (30 seconds, no tools)

Grab a quarter. Any U.S. quarter works.
Push it upside down into a tread groove, Washington's head going in first.
Look at the top of his head. If it's visible above the tread, you have 4/32″ or less — the tire won't pass a lease inspection.
Check several spots — inner, middle, and outer grooves on each tire. Inspectors measure the lowest point, and uneven wear can fail one tire while the rest pass.

Note: the penny test (Lincoln's head visible = 2/32″) measures the legal limit, not the lease limit. Use a quarter for lease returns.

The expensive misunderstanding: "My tires still have tread" is not the standard. If the inspector's gauge reads under 4/32″ at the lowest point on any tire, dealers typically charge $150–$300 per tire — plus they get to pick the replacement. We've seen installed dealer quotes hit $700 a tire.

What your options are if you're under 4/32″

1. Let the dealer bill you

Easiest, and usually the most expensive. The dealer replaces at retail (or above) and adds the charge to your lease-end invoice. Expect roughly $150–$300+ per tire before installation.

2. Buy new tires yourself

Cheaper than the dealer's bill if you shop around — but you're buying brand-new rubber for a car you're giving back. Most people overpay here.

3. Find spec-correct used tires

A used tire with 5/32″–8/32″ of even tread passes inspection exactly like a new one — the inspector checks depth, matching, and condition, not your receipt. This is the move most lease guides skip, and it's why LeaseEndTires exists: we hunt down tires that match your lease spec (size, brand, 4/32″+ tread) for $29 a pair ($49 a full set). No find in 48 hours, no fee.

Quick checklist before your inspection

Measure all four tires (and check your contract about the spare)
Quarter test every tire, inner/middle/outer grooves
Look for sidewall damage, plugs, bulges, and mismatched brands — those fail too
If any tire is under 4/32″, decide your fix before the inspection, not after the invoice

Under 4/32″? Don't pay the dealer's tire bill.

We find lease-spec tires with 4/32″+ tread — matching brand, size, and speed rating — for a flat $29 a pair ($49 a full set). No find in 48 hours, no fee.

Find my tires — $29

Heads up: some of our tire recommendations earn us a small affiliate commission. It never changes what we recommend — best tire for your spec, always.

Related: BMW lease return tire requirements — BMW's rules go further than 4/32″.