Tires Size 235/40R18
Dimensions, specs, and every size 235/40R18 tire currently in stock
25.4"
645 mm · calculated
235 mm
9.25 inches
3.7"
94 mm · 40% profile
18"
457.2 mm
1 product
In stock · Free shipping on every order
Showing 1 to 1 of 1 products
235/40R18 Specifications
Read directly from the size code. Load index, speed rating, and rim width range vary by model.
| Specification | Imperial | Metric |
|---|---|---|
| Section width | 9.25 in | 235 mm |
| Aspect ratio | 40% | — |
| Sidewall height | 3.7 in | 94 mm |
| Overall diameter (calculated) | 25.4 in | 645 mm |
| Wheel / rim diameter | 18 in | 457.2 mm |
| Construction | Radial | — |
What does 235/40R18 mean?
Reading the code on your sidewall
235 mm
The distance from sidewall to sidewall across the tire's widest point.
40% profile
The sidewall stands 40% of the section width, which is 94 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.
235/40R18 Questions & Answers
Dimensions and fitment guidelines for size 235/40R18
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 anytime to verify size compatibility, load index, or speed ratings for your vehicle.
Fast Expert Advice
Response within 1 business hour
Shop Our Collection
Explore premium tires, wheels, and fitments from top brands
245/30ZR22 PEGASUS HPX SPORT A/S 92W XL 420 AA A 50K + ROAD HAZARD
11R24.5 TRAVELSTAR TD660 CS DRIVE 149/146M 16PLY
205/50ZR17 FULLRUN F6000 93W XL M+S 380A-A
LT265/70R16 LIONHART LIONCLAW ATX2 BLK 10PLY 40K+ ROAD HAZARD
ST235/85R16 FORTUNE ST01 125/121M 10PLY 80psi 3640/3200
265/70R16 ZETA CONSENSO H/T 112H 500A-A M+S 40K+ ROAD HAZARD
LT265/70R16 ROYALHUNTER ROYALTRAX A/T 121/118S 10PLY
245/45ZR18 FORTUNE VIENTO FSR702 A/S 100Y XL M+S 500A-A 50K
Leao Reg Drive AAR22S 3PMSF 225/70R19.5
315/35ZR20 PEGASUS HPX SPORT A/S 110W XL 420 AA A 50K + ROAD HAZARD
235/55R19 ARMSTRONG TRU-TRAC SU 105V XL M+S 440-A-A 65K+ ROAD HAZARD
33X12.50R20LT ATLANDER ROVERCLAW M/T I 119Q ***12PLY
185/65R15 GLADIATOR X COMP HP AS1 88H 420 A-A 60K + ROAD HAZARD
P235/70R16 LEXANI LXHT-206 107T 500-A-A 55K+ ROAD HAZARD
235/50ZR18 ROADTRACK TERRENA UHP 110W XL 420-A-A 50K + ROAD HAZARD
205/45ZR16 ROADTRACK TERRENA UHP 98W M+S 420-A-A 50K + ROAD HAZARD
215/60R17 ROYALBLACK MILAGEMAX SUV/CUV 96V 620-A-A 60K + ROAD HAZARD
245/45ZR20 ATLANDER XSPORT-86 103W XL 420A-A 45K + ROAD HAZARD
LT285/75R16 CROSSWIND RUGGED TRAXX R/T 126/123Q 10PLY 80psi 50K
245/30ZR22 PEGASUS HPX SPORT A/S 92W XL 420 AA A 50K + ROAD HAZARD
11R24.5 TRAVELSTAR TD660 CS DRIVE 149/146M 16PLY
205/50ZR17 FULLRUN F6000 93W XL M+S 380A-A
LT265/70R16 LIONHART LIONCLAW ATX2 BLK 10PLY 40K+ ROAD HAZARD
ST235/85R16 FORTUNE ST01 125/121M 10PLY 80psi 3640/3200
265/70R16 ZETA CONSENSO H/T 112H 500A-A M+S 40K+ ROAD HAZARD
LT265/70R16 ROYALHUNTER ROYALTRAX A/T 121/118S 10PLY
245/45ZR18 FORTUNE VIENTO FSR702 A/S 100Y XL M+S 500A-A 50K
Leao Reg Drive AAR22S 3PMSF 225/70R19.5
315/35ZR20 PEGASUS HPX SPORT A/S 110W XL 420 AA A 50K + ROAD HAZARD
235/55R19 ARMSTRONG TRU-TRAC SU 105V XL M+S 440-A-A 65K+ ROAD HAZARD
33X12.50R20LT ATLANDER ROVERCLAW M/T I 119Q ***12PLY
185/65R15 GLADIATOR X COMP HP AS1 88H 420 A-A 60K + ROAD HAZARD
P235/70R16 LEXANI LXHT-206 107T 500-A-A 55K+ ROAD HAZARD
235/50ZR18 ROADTRACK TERRENA UHP 110W XL 420-A-A 50K + ROAD HAZARD
205/45ZR16 ROADTRACK TERRENA UHP 98W M+S 420-A-A 50K + ROAD HAZARD
215/60R17 ROYALBLACK MILAGEMAX SUV/CUV 96V 620-A-A 60K + ROAD HAZARD
245/45ZR20 ATLANDER XSPORT-86 103W XL 420A-A 45K + ROAD HAZARD
LT285/75R16 CROSSWIND RUGGED TRAXX R/T 126/123Q 10PLY 80psi 50K