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
Showing 1 to 10 of 14 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
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Explore premium tires, wheels, and fitments from top brands
Zenna Sport Line 205/50ZR17
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Rbp Repulsor X/T RX Blk 37X13.50R20
Rbp Repulsor X/T RX Blk 37X13.50R20
Armstrong Tru-trac SU 235/55R19
Armstrong Tru-trac SU 235/55R19
Barkley Rammus X/T All-terrain LT285/70R17
Barkley Rammus X/T All-terrain LT285/70R17
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Royalhunter Royaltrax A/T 33X12.50R20LT
National Touring A/S 185/65R15
National Touring A/S 185/65R15
Rbp Repulsor R/T 35X12.50R18LT
Rbp Repulsor R/T 35X12.50R18LT
Toyo Open Country A/T III LT325/60R20
Toyo Open Country A/T III LT325/60R20
Fortune Tormenta H/T FSR305 275/55R20
Fortune Tormenta H/T FSR305 275/55R20
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Cooper Discoverer S/T Maxx Blk Old Dot LT305/65R17
Gripmax Maxgrip R/T LT305/55R20
Gripmax Maxgrip R/T LT305/55R20
Goldway R828 Dot 285/25R20
Goldway R828 Dot 285/25R20
Lexani LXUHP-207 215/45ZR18
Lexani LXUHP-207 215/45ZR18
Sumitomo Touring Lst 215/60R16
Sumitomo Touring Lst 215/60R16
Trailer master Pro ST175/80R13
Trailer master Pro ST175/80R13
Landspider Citytraxx H/P 225/35ZR20
Landspider Citytraxx H/P 225/35ZR20
Lionhart Lh-five Blk P265/45R20
Lionhart Lh-five Blk P265/45R20
Fortune Tormenta R/T Buffed LT285/60R20
Fortune Tormenta R/T Buffed LT285/60R20
Zenna Sport Line 205/50ZR17
Zenna Sport Line 205/50ZR17
Cosmo EL Tigre A/T 2755520
Royalblack Touring HP 205/65R16
Royalblack Touring HP 205/65R16
Rbp Repulsor X/T RX Blk 37X13.50R20
Rbp Repulsor X/T RX Blk 37X13.50R20
Armstrong Tru-trac SU 235/55R19
Armstrong Tru-trac SU 235/55R19
Barkley Rammus X/T All-terrain LT285/70R17
Barkley Rammus X/T All-terrain LT285/70R17
Royalhunter Royaltrax A/T 33X12.50R20LT
Royalhunter Royaltrax A/T 33X12.50R20LT
National Touring A/S 185/65R15
National Touring A/S 185/65R15
Rbp Repulsor R/T 35X12.50R18LT
Rbp Repulsor R/T 35X12.50R18LT
Toyo Open Country A/T III LT325/60R20
Toyo Open Country A/T III LT325/60R20
Fortune Tormenta H/T FSR305 275/55R20
Fortune Tormenta H/T FSR305 275/55R20
Cooper Discoverer S/T Maxx Blk Old Dot LT305/65R17
Cooper Discoverer S/T Maxx Blk Old Dot LT305/65R17
Gripmax Maxgrip R/T LT305/55R20
Gripmax Maxgrip R/T LT305/55R20
Goldway R828 Dot 285/25R20
Goldway R828 Dot 285/25R20
Lexani LXUHP-207 215/45ZR18
Lexani LXUHP-207 215/45ZR18
Sumitomo Touring Lst 215/60R16
Sumitomo Touring Lst 215/60R16
Trailer master Pro ST175/80R13
Trailer master Pro ST175/80R13
Landspider Citytraxx H/P 225/35ZR20
Landspider Citytraxx H/P 225/35ZR20
Lionhart Lh-five Blk P265/45R20
Lionhart Lh-five Blk P265/45R20
Fortune Tormenta R/T Buffed LT285/60R20
Fortune Tormenta R/T Buffed LT285/60R20