Replace

Stay, inspect, or change the set.

Tread, age, and what you can see. The record does not estimate miles left.

Trims with a dated placard sheet. For any other vehicle, enter what the sticker says.

Which vehicle

Choose a trim already on file, or enter the vehicle and the size on the door placard.

Choose a listed trim, or enter the vehicle you drive.

Where you drive

CityPlace already on the menu

Type a city, or choose a place on the menu. A typed city uses the nearest station already read.

Choose where you drive.

How you use the vehicle

None of these is assumed. Pick the one that matches this car.

Choose how you use the vehicle.

Rear size, if the sticker lists a different one

Leave blank when front and rear are the same. One size does not approve both axles.

Required load index

Enter the required load index from the vehicle manufacturer’s specification or owner’s manual. If you cannot find it, ask your tire professional. A door sticker does not always print a load index.

Where that load index came from

Required speed symbol

From the vehicle documentation. Mixed use does not set this.

Where that speed symbol came from

Mark a winter-tire speed exception. This stays off unless you check it, and it does not confirm a local rule.

When will you use these tires?

Another place you drive

Optional. A second place uses the climate record already read for that place.

The set on the car now

Measure a main groove, the deep channel between the blocks.

Remaining tread (32nds of an inch)

2/32 is the common legal minimum in the US. 4/32 is already weak in the wet.

A low reading, a bulge, or an old date can say replace. This page does not estimate how many miles are left.

Age in years

Or enter the date-code week and year below.

Brand

Leave blank when the sidewall has not been read.

Line

Season marking

Only what you can read. Leave this unset when the marking was not checked.

Date-code week

Date-code year

Sidewall cracking: fine cracks in the rubber.

Sidewall bulge: a raised spot in the rubber.

What you are seeing