❄ Winter / snow rated · Free shipping in Canada
Cadillac STS Winter Tires
148 winter tires in Cadillac STS sizes (2005-2011 models) - from $151.38.
Every Cadillac STS winter tire below matches a factory (OE) size for the model - covering 2005 through 2011. Depending on year and trim, the STS uses 255/45R18, 235/50R17, 235/50R18, 255/45R17, 275/40R19 - check your door-jamb placard or pick your year below for an exact match. All tires shown carry winter or severe-service (3PMSF mountain-snowflake) ratings and ship free anywhere in Canada.
Winter tires for the STS
Zeta Tires
ANTARCTICA 5+
235/50R18 · Winter
$166.79 each
✓ In stock
Mazzini Tires
SNOW LEOPARD 2
235/50R18 · Winter
$166.79 each
✓ In stock
BFGoodrich
Winter T/A KSI
235/50R18 · Winter
$285.41 each
✓ In stock
Antares Tire
Grip 20
235/50R18 · Winter
$203.82 each
✓ In stock
Antares Tire
Grip 60 ice
235/50R18 · Winter
$208.43 each
✓ In stock
Bridgestone
BLIZZAK 6
235/50R17 · Winter
$282.84 each
✓ In stock
Bridgestone
Blizzak IcePeak
235/50R18 · Winter
$291.16 each
✓ In stock
Continental
Viking Contact 7
235/50R18 · Winter
$291.95 each
✓ In stock
West Lake
SW606 Winter
235/50R18XL · Winter
$181.09 each
✓ In stock
Good Year
Ultra Grip Performance+
235/50R18 · Winter
$266.72 each
✓ In stock
Good Year
WinterCommand Ultra
235/50R18 · Winter
$289.37 each
✓ In stock
Yokohama
BluEarth V905
235/50R18 · Winter
$256.45 each
✓ In stock
Yokohama
Ice Guard IG53
235/50R18 · Winter
$278.50 each
✓ In stock
Hercules
Avalanche RT
235/50R18 · Winter
$205.06 each
✓ In stock
Firestone Tires
Winterforce 2
235/50R18 · Winter
$250.60 each
✓ In stock
Rovelo
ARCTIC VISION
235/50R18 · Winter
$201.32 each
✓ In stock
Rovelo
ARCTIC VISION
255/45R18 · Winter
$204.77 each
✓ In stock
Cooper
Evolution Winter
235/50R18 · Winter
$238.59 each
✓ In stock
Rovelo
ARCTIC VISION
275/40R19 · Winter
$257.60 each
✓ In stock
Cooper
Discoverer True North
235/50R18 · Winter
$267.76 each
✓ In stock
GT Radial
Champiro WinterPro HP
235/50R18 · Winter
$162.34 each
✓ In stock
Nexen
WinGuard Sport 2
235/50R18 · Winter
$211.55 each
✓ In stock
Falken
Espia EPZ II
235/50R18 · Winter
$218.18 each
✓ In stock
Nexen
WINGUARD WINSPIKE 3
235/50R18 · Winter
$221.41 each
✓ In stock
Shop by year
Cadillac STS winter tire & wheel packages
Mounted, balanced and fitment-guaranteed - swap the whole set in your driveway each season instead of paying twice-yearly remounting. The configurator shows only packages made for your vehicle.
Build my package ›
Shop winter tires by brand
Zeta Tires winter tires
Mazzini Tires winter tires
BFGoodrich winter tires
Antares Tire winter tires
Bridgestone winter tires
Continental winter tires
West Lake winter tires
Good Year winter tires
Yokohama winter tires
Hercules winter tires
Winter tire FAQ
What size winter tires does a Cadillac STS use?
Depending on year and trim, the Cadillac STS uses 255/45R18, 235/50R17, 235/50R18, 255/45R17, 275/40R19. The exact size is printed on the driver's door-jamb placard. Picking your year above filters to guaranteed-fit options.
Are winter tires mandatory in Canada?
Quebec requires winter tires (with the 3PMSF mountain-snowflake symbol) from December 1 to March 15. British Columbia requires winter or M+S tires on many highways from October 1 to April 30. In the rest of Canada they are strongly recommended - and most insurers offer a winter tire discount.
When should I install winter tires?
Once temperatures stay below 7 degrees C - typically late October to mid November - winter compounds grip better than all-seasons even on dry pavement. Installing all four at the same time keeps handling balanced.
Studded or studless winter tires?
Studless winters handle most Canadian conditions including deep snow and cold slush. Studded tires add grip on hard ice but are provincially regulated (dates and permissions vary). Check your province's rules before choosing studded.
Should I get a winter tire and wheel package?
A dedicated set of winter wheels pays for itself in 2-3 seasons of avoided mounting/balancing fees, protects your summer wheels from salt, and makes the seasonal swap a 30-minute driveway job. Our configurator builds fitment-guaranteed packages for your exact vehicle.