Maintenance guide · Glass Box Diagnostics
Front-drive cars chew the outside shoulders of front tires while the rears barely wear. Rotate every 5,000–8,000 miles and a set lasts its full tread life; skip it and you replace two tires where the pattern called for none. The oversell is not the rotation itself — it is what gets attached to it.
Honest interval
Every 5k–8k mi
Cost when it IS due
$20–$50; many tire shops do it free with purchased tires
Most manuals say 7,500–10,000 miles or 'when tread depth difference reaches 3/32 inch' — but with Texas heat accelerating rubber aging and uneven wear being the one tire failure you can actually prevent, 5,000–6,000 miles is the cheap insurance move.
A tread-depth gauge ($8) at three points across each tire tells you everything: if the front outers are 3/32 ahead of the rears, you are late. On directional or staggered setups the rotation pattern changes but the math does not.
The free-or-cheap rotation that ends in 'uneven wear pattern — you need an alignment and probably two new tires today.' Uneven wear from skipping rotations is fixed by rotating; uneven wear that GROWS after a rotation is an alignment or suspension issue — and that distinction is the entire upsell.
Rotate first, measure again in 3,000 miles. Wear that equalizes was a rotation problem you just fixed for free; wear that continues in the same corner pattern earns a real alignment diagnosis — measured, not sold.
If it's actually broken, price the real repair
Lights that make this service urgent
Symptoms that point here
Is it due on YOUR car? Settle it with a measurement, not a sticker.
Intervals on this page are manufacturer schedules and honest street pricing for independent shops, published as a benchmark — not a quote for your car. The line item nobody else prices: whether YOUR car is actually due. A flat $150 diagnostic answers that with evidence instead of a calendar.