Tires Size 225/55R18
Dimensions, specs, and every size 225/55R18 tire currently in stock
27.74"
705 mm · calculated
225 mm
8.86 inches
4.87"
123.8 mm · 55% profile
18"
457.2 mm
Showing 1 to 5 of 5 products
225/55R18 Specifications
Read directly from the size code. Load index, speed rating, and rim width range vary by model.
| Specification | Imperial | Metric |
|---|---|---|
| Section width | 8.86 in | 225 mm |
| Aspect ratio | 55% | — |
| Sidewall height | 4.87 in | 123.8 mm |
| Overall diameter (calculated) | 27.74 in | 705 mm |
| Wheel / rim diameter | 18 in | 457.2 mm |
| Construction | Radial | — |
What does 225/55R18 mean?
Reading the code on your sidewall
225 mm
The distance from sidewall to sidewall across the tire's widest point.
55% profile
The sidewall stands 55% of the section width, which is 123.8 mm on this size.
Radial
The body plies run across the tire at right angles to the direction of travel.
18 in
Fits a wheel measuring 18 inches across.
225/55R18 Questions & Answers
Dimensions and fitment guidelines for size 225/55R18
Need Help Choosing The Right Tires?
Have questions about fitment, brands, or pricing? Our team of tire experts is here to guide you to the perfect set — zero pressure, zero sales tactics.
Talk to a Tire Specialist Today
We make tire buying fast and effortless. Call or email us (Mon – Sat, 9AM – 5PM PT) to check size compatibility, load index, or speed ratings for your vehicle.
Expert Advice
Reply within 1 business day
Shop Our Collection
Explore premium tires, wheels, and fitments from top brands
Barkley Aphelios UHP 275/45R20
Armstrong Blu-trac HP 275/35R18
Royalblack Terra Force Rtx R/T LT265/75R16
Armstrong Blu-trac HP 225/50R17
Laufenn Fit A/S LH01 Made BY Hankook 255/45ZR20
Nokian WR SUV3 Studless Winter 235/55R20
Toyo Open Country R/T Trail LT285/50R22
Gripmax Maxgrip R/T 80PSI 37X13.50R24LT
Ironman 255/50ZR19XL Iron Imove Sport G2 255/50ZR19
Landspider Wildtraxx A/T 245/65R17
Fortune Tormenta R/T 80PSI LT295/55R20
Gladiator Comp A/T P275/55R20
Barkley Aphelios UHP 275/45R20
Armstrong Blu-trac HP 275/35R18
Royalblack Terra Force Rtx R/T LT265/75R16
Armstrong Blu-trac HP 225/50R17
Laufenn Fit A/S LH01 Made BY Hankook 255/45ZR20
Nokian WR SUV3 Studless Winter 235/55R20
Toyo Open Country R/T Trail LT285/50R22
Gripmax Maxgrip R/T 80PSI 37X13.50R24LT
Ironman 255/50ZR19XL Iron Imove Sport G2 255/50ZR19
Landspider Wildtraxx A/T 245/65R17
Fortune Tormenta R/T 80PSI LT295/55R20
Gladiator Comp A/T P275/55R20