Tire Size Chart

Calculated diameter and width (inches) and revolutions per mile for all 507 sizes listed in the 7 maker data books we use (BFGoodrich, Falken, Goodyear, Hankook, Nitto, Toyo, Uniroyal), sorted by wheel size and height. Revs per mile are nominal (unloaded); makers' loaded figures run about 2.5–5% higher.

13"14"15"16"17"18"19"20"21"22"23"24"26"

13-inch wheels

Size	Diameter	Width	Revs/mi
225/45R13	21.0	8.9	962
185/60R13	21.7	7.3	928
175/70R13	22.6	6.9	891
205/60R13	22.7	8.1	889

14-inch wheels

Size	Diameter	Width	Revs/mi
185/60R14	22.7	7.3	887
205/55R14	22.9	8.1	882
175/65R14	23.0	6.9	879
195/60R14	23.2	7.7	869
185/65R14	23.5	7.3	859
175/70R14	23.6	6.9	853
185/70R14	24.2	7.3	834
195/70R14	24.7	7.7	815
185/75R14	24.9	7.3	809
205/70R14	25.3	8.1	797
195/75R14	25.5	7.7	790
215/70R14	25.9	8.5	780
205/75R14	26.1	8.1	773
225/70R14	26.4	8.9	764
215/75R14	26.7	8.5	755

15-inch wheels

Size	Diameter	Width	Revs/mi
195/45R15	21.9	7.7	921
175/55R15	22.6	6.9	893
195/50R15	22.7	7.7	889
245/40R15	22.7	9.6	888
225/45R15	23.0	8.9	878
185/55R15	23.0	7.3	876
205/50R15	23.1	8.1	874
195/55R15	23.4	7.7	860
185/60R15	23.7	7.3	850
225/50R15	23.9	8.9	845
175/65R15	24.0	6.9	842
195/60R15	24.2	7.7	833
235/50R15	24.3	9.3	832
185/65R15	24.5	7.3	824
205/60R15	24.7	8.1	817
195/65R15	25.0	7.7	807
215/60R15	25.2	8.5	802
265/50R15	25.4	10.4	793
205/65R15	25.5	8.1	791
275/50R15	25.8	10.8	781
215/65R15	26.0	8.5	776
235/60R15	26.1	9.3	773
205/70R15	26.3	8.1	767
245/60R15	26.6	9.6	759
295/50R15	26.6	11.6	758
215/70R15	26.9	8.5	751
255/60R15	27.0	10.0	746
205/75R15	27.1	8.1	744
225/70R15	27.4	8.9	736
215/75R15	27.7	8.5	728
325/50R15	27.8	12.8	726
235/70R15	28.0	9.3	722
275/60R15	28.0	10.8	720
225/75R15	28.3	8.9	713
235/75R15	28.9	9.3	698
255/70R15	29.1	10.0	694
265/70R15	29.6	10.4	681
265/75R15	30.6	10.4	658
30x9.50R15	30.0	9.5	672
31x10.50R15	31.0	10.5	651
32x11.50R15	32.0	11.5	630
32x9.50R15	32.0	9.5	630
33x10.50R15	33.0	10.5	611
33x12.50R15	33.0	12.5	611
33x13.50R15	33.0	13.5	611
33x9.50R15	33.0	9.5	611
35x12.50R15	35.0	12.5	576
35x13.50R15	35.0	13.5	576
35x14.50R15	35.0	14.5	576
35x9.50R15	35.0	9.5	576
37x14.50R15	37.0	14.5	545
38x15.50R15	38.0	15.5	531

16-inch wheels

Size	Diameter	Width	Revs/mi
205/40R16	22.5	8.1	898
195/45R16	22.9	7.7	880
205/45R16	23.3	8.1	867
185/50R16	23.3	7.3	866
215/45R16	23.6	8.5	854
195/50R16	23.7	7.7	852
225/45R16	24.0	8.9	841
185/55R16	24.0	7.3	840
205/50R16	24.1	8.1	838
175/60R16	24.3	6.9	831
195/55R16	24.4	7.7	825
245/45R16	24.7	9.6	817
185/60R16	24.7	7.3	815
225/50R16	24.9	8.9	811
205/55R16	24.9	8.1	811
195/60R16	25.2	7.7	800
215/55R16	25.3	8.5	797
245/50R16	25.6	9.6	786
205/60R16	25.7	8.1	785
225/55R16	25.7	8.9	783
255/50R16	26.0	10.0	775
215/60R16	26.2	8.5	771
205/65R16	26.5	8.1	761
225/60R16	26.6	8.9	757
215/65R16	27.0	8.5	747
235/60R16	27.1	9.3	744
205/70R16	27.3	8.1	739
195/75R16	27.5	7.7	733
225/65R16	27.5	8.9	733
215/70R16	27.9	8.5	724
235/65R16	28.0	9.3	720
205/75R16	28.1	8.1	718
225/70R16	28.4	8.9	710
235/70R16	29.0	9.3	697
255/65R16	29.1	10.0	694
225/75R16	29.3	8.9	689
245/70R16	29.5	9.6	684
235/75R16	29.9	9.3	675
255/70R16	30.1	10.0	671
215/85R16	30.4	8.5	664
245/75R16	30.5	9.6	662
265/70R16	30.6	10.4	659
275/70R16	31.2	10.8	647
265/75R16	31.6	10.4	637
285/70R16	31.7	11.2	636
235/85R16	31.7	9.3	636
305/70R16	32.8	12.0	615
285/75R16	32.8	11.2	614
255/85R16	33.1	10.0	610
295/75R16	33.4	11.6	603
315/75R16	34.6	12.4	583
385/70R16	37.2	15.2	542
35x11.50R16	35.0	11.5	576

17-inch wheels

Size	Diameter	Width	Revs/mi
215/35R17	22.9	8.5	880
205/40R17	23.5	8.1	860
245/35R17	23.8	9.6	849
215/40R17	23.8	8.5	848
205/45R17	24.3	8.1	831
235/40R17	24.4	9.3	827
215/45R17	24.6	8.5	819
245/40R17	24.7	9.6	816
225/45R17	25.0	8.9	808
255/40R17	25.0	10.0	806
205/50R17	25.1	8.1	804
235/45R17	25.3	9.3	796
265/40R17	25.3	10.4	796
215/50R17	25.5	8.5	792
275/40R17	25.7	10.8	786
245/45R17	25.7	9.6	785
315/35R17	25.7	12.4	785
225/50R17	25.9	8.9	780
205/55R17	25.9	8.1	779
285/40R17	26.0	11.2	776
255/45R17	26.0	10.0	775
235/50R17	26.3	9.3	768
215/55R17	26.3	8.5	767
245/50R17	26.6	9.6	757
225/55R17	26.7	8.9	754
255/50R17	27.0	10.0	746
215/60R17	27.2	8.5	743
235/55R17	27.2	9.3	742
225/60R17	27.6	8.9	730
305/45R17	27.8	12.0	725
275/50R17	27.8	10.8	725
345/40R17	27.9	13.6	724
215/65R17	28.0	8.5	720
235/60R17	28.1	9.3	718
225/65R17	28.5	8.9	707
275/55R17	28.9	10.8	698
235/65R17	29.0	9.3	695
255/60R17	29.0	10.0	694
265/60R17	29.5	10.4	683
245/65R17	29.5	9.6	683
235/70R17	30.0	9.3	673
275/60R17	30.0	10.8	672
255/65R17	30.1	10.0	671
225/75R17	30.3	8.9	666
245/70R17	30.5	9.6	661
265/65R17	30.6	10.4	660
235/75R17	30.9	9.3	653
255/70R17	31.1	10.0	649
275/65R17	31.1	10.8	649
245/75R17	31.5	9.6	641
265/70R17	31.6	10.4	638
235/80R17	31.8	9.3	634
315/60R17	31.9	12.4	633
255/75R17	32.1	10.0	629
275/70R17	32.2	10.8	627
285/70R17	32.7	11.2	617
235/85R17	32.7	9.3	616
255/80R17	33.1	10.0	610
295/70R17	33.3	11.6	606
305/70R17	33.8	12.0	596
285/75R17	33.8	11.2	596
315/70R17	34.4	12.4	587
33x11.50R17	33.0	11.5	611
33x12.50R17	33.0	12.5	611
35x11.50R17	35.0	11.5	576
35x12.50R17	35.0	12.5	576
37x11.50R17	37.0	11.5	545
37x12.50R17	37.0	12.5	545
37x13.50R17	37.0	13.5	545
38x12.50R17	38.0	12.5	531
38x13.50R17	38.0	13.5	531
40x13.50R17	40.0	13.5	504

18-inch wheels

Size	Diameter	Width	Revs/mi
235/30R18	23.6	9.3	856
205/35R18	23.6	8.1	853
215/35R18	23.9	8.5	843
225/35R18	24.2	8.9	833
205/40R18	24.5	8.1	825
285/30R18	24.7	11.2	815
245/35R18	24.8	9.6	815
215/40R18	24.8	8.5	814
295/30R18	25.0	11.6	808
255/35R18	25.0	10.0	806
225/40R18	25.1	8.9	804
205/45R18	25.3	8.1	798
265/35R18	25.3	10.4	797
235/40R18	25.4	9.3	794
315/30R18	25.4	12.4	793
275/35R18	25.6	10.8	788
215/45R18	25.6	8.5	787
195/50R18	25.7	7.7	785
245/40R18	25.7	9.6	784
285/35R18	25.9	11.2	780
335/30R18	25.9	13.2	778
225/45R18	26.0	8.9	777
255/40R18	26.0	10.0	775
295/35R18	26.1	11.6	772
235/45R18	26.3	9.3	766
265/40R18	26.3	10.4	765
305/35R18	26.4	12.0	764
215/50R18	26.5	8.5	762
275/40R18	26.7	10.8	756
245/45R18	26.7	9.6	756
315/35R18	26.7	12.4	756
225/50R18	26.9	8.9	751
285/40R18	27.0	11.2	748
255/45R18	27.0	10.0	746
235/50R18	27.3	9.3	740
295/40R18	27.3	11.6	739
215/55R18	27.3	8.5	738
265/45R18	27.4	10.4	736
345/35R18	27.5	13.6	733
305/40R18	27.6	12.0	731
245/50R18	27.6	9.6	730
225/55R18	27.7	8.9	727
315/40R18	27.9	12.4	722
255/50R18	28.0	10.0	719
235/55R18	28.2	9.3	716
295/45R18	28.5	11.6	709
245/55R18	28.6	9.6	705
225/60R18	28.6	8.9	704
305/45R18	28.8	12.0	700
255/55R18	29.0	10.0	694
235/60R18	29.1	9.3	693
245/60R18	29.6	9.6	682
235/65R18	30.0	9.3	672
255/60R18	30.0	10.0	671
265/60R18	30.5	10.4	661
275/60R18	31.0	10.8	651
255/65R18	31.1	10.0	650
285/60R18	31.5	11.2	641
245/70R18	31.5	9.6	640
265/65R18	31.6	10.4	639
255/70R18	32.1	10.0	629
275/65R18	32.1	10.8	629
305/60R18	32.4	12.0	622
285/65R18	32.6	11.2	619
265/70R18	32.6	10.4	619
295/65R18	33.1	11.6	609
275/70R18	33.2	10.8	608
325/60R18	33.4	12.8	605
305/65R18	33.6	12.0	600
285/70R18	33.7	11.2	598
295/70R18	34.3	11.6	589
325/65R18	34.6	12.8	582
305/70R18	34.8	12.0	579
285/75R18	34.8	11.2	579
33x11.50R18	33.0	11.5	611
33x12.50R18	33.0	12.5	611
35x11.50R18	35.0	11.5	576
35x12.50R18	35.0	12.5	576
37x11.50R18	37.0	11.5	545
37x12.50R18	37.0	12.5	545
37x13.50R18	37.0	13.5	545
38x13.50R18	38.0	13.5	531
38x15.50R18	38.0	15.5	531

19-inch wheels

Size	Diameter	Width	Revs/mi
215/35R19	24.9	8.5	809
255/30R19	25.0	10.0	806
225/35R19	25.2	8.9	800
315/25R19	25.2	12.4	800
265/30R19	25.3	10.4	798
235/35R19	25.5	9.3	792
275/30R19	25.5	10.8	791
285/30R19	25.7	11.2	784
245/35R19	25.8	9.6	783
295/30R19	26.0	11.6	777
255/35R19	26.0	10.0	775
225/40R19	26.1	8.9	773
305/30R19	26.2	12.0	770
265/35R19	26.3	10.4	767
235/40R19	26.4	9.3	764
315/30R19	26.4	12.4	763
275/35R19	26.6	10.8	759
325/30R19	26.7	12.8	756
245/40R19	26.7	9.6	755
285/35R19	26.9	11.2	751
335/30R19	26.9	13.2	749
225/45R19	27.0	8.9	748
255/40R19	27.0	10.0	746
295/35R19	27.1	11.6	743
345/30R19	27.1	13.6	743
235/45R19	27.3	9.3	738
265/40R19	27.3	10.4	738
305/35R19	27.4	12.0	736
275/40R19	27.7	10.8	729
245/45R19	27.7	9.6	729
285/40R19	28.0	11.2	721
255/45R19	28.0	10.0	719
235/50R19	28.3	9.3	714
295/40R19	28.3	11.6	713
265/45R19	28.4	10.4	710
245/50R19	28.6	9.6	704
225/55R19	28.7	8.9	702
275/45R19	28.7	10.8	702
255/50R19	29.0	10.0	695
285/45R19	29.1	11.2	693
235/55R19	29.2	9.3	691
265/50R19	29.4	10.4	685
245/55R19	29.6	9.6	681
255/55R19	30.0	10.0	671
265/55R19	30.5	10.4	662
275/55R19	30.9	10.8	652
255/60R19	31.0	10.0	650
255/65R19	32.1	10.0	629

20-inch wheels

Size	Diameter	Width	Revs/mi
225/30R20	25.3	8.9	797
275/25R20	25.4	10.8	794
235/30R20	25.6	9.3	789
285/25R20	25.6	11.2	788
245/30R20	25.8	9.6	782
295/25R20	25.8	11.6	781
305/25R20	26.0	12.0	776
255/30R20	26.0	10.0	775
225/35R20	26.2	8.9	770
265/30R20	26.3	10.4	768
235/35R20	26.5	9.3	762
275/30R20	26.5	10.8	761
285/30R20	26.7	11.2	754
245/35R20	26.8	9.6	754
345/25R20	26.8	13.6	753
295/30R20	27.0	11.6	748
255/35R20	27.0	10.0	746
225/40R20	27.1	8.9	745
305/30R20	27.2	12.0	741
265/35R20	27.3	10.4	739
315/30R20	27.4	12.4	735
275/35R20	27.6	10.8	731
325/30R20	27.7	12.8	729
245/40R20	27.7	9.6	728
285/35R20	27.9	11.2	724
255/40R20	28.0	10.0	719
295/35R20	28.1	11.6	717
235/45R20	28.3	9.3	712
265/40R20	28.3	10.4	711
305/35R20	28.4	12.0	710
275/40R20	28.7	10.8	704
245/45R20	28.7	9.6	703
315/35R20	28.7	12.4	703
285/40R20	29.0	11.2	696
255/45R20	29.0	10.0	695
235/50R20	29.3	9.3	689
295/40R20	29.3	11.6	689
265/45R20	29.4	10.4	686
305/40R20	29.6	12.0	681
245/50R20	29.6	9.6	680
275/45R20	29.7	10.8	678
255/50R20	30.0	10.0	671
285/45R20	30.1	11.2	670
235/55R20	30.2	9.3	668
265/50R20	30.4	10.4	663
295/45R20	30.5	11.6	662
275/50R20	30.8	10.8	654
255/55R20	31.0	10.0	650
235/60R20	31.1	9.3	648
285/50R20	31.2	11.2	646
245/60R20	31.6	9.6	639
275/55R20	31.9	10.8	632
305/50R20	32.0	12.0	630
255/60R20	32.0	10.0	629
285/55R20	32.3	11.2	624
265/60R20	32.5	10.4	620
295/55R20	32.8	11.6	615
325/50R20	32.8	12.8	615
275/60R20	33.0	10.8	611
305/55R20	33.2	12.0	607
285/60R20	33.5	11.2	603
295/60R20	33.9	11.6	594
275/65R20	34.1	10.8	592
285/65R20	34.6	11.2	583
315/60R20	34.9	12.4	578
295/65R20	35.1	11.6	575
325/60R20	35.4	12.8	570
33x11.50R20	33.0	11.5	611
33x12.50R20	33.0	12.5	611
34x11.50R20	34.0	11.5	593
35x11.50R20	35.0	11.5	576
35x12.50R20	35.0	12.5	576
35x13.50R20	35.0	13.5	576
35x15.50R20	35.0	15.5	576
37x11.50R20	37.0	11.5	545
37x12.50R20	37.0	12.5	545
37x13.50R20	37.0	13.5	545
38x13.50R20	38.0	13.5	531
38x15.50R20	38.0	15.5	531
40x15.50R20	40.0	15.5	504
42x13.50R20	42.0	13.5	480

21-inch wheels

Size	Diameter	Width	Revs/mi
255/30R21	27.0	10.0	746
275/30R21	27.5	10.8	733
245/35R21	27.8	9.6	727
295/30R21	28.0	11.6	721
255/35R21	28.0	10.0	720
305/30R21	28.2	12.0	715
265/35R21	28.3	10.4	713
315/30R21	28.4	12.4	709
275/35R21	28.6	10.8	706
325/30R21	28.7	12.8	703
245/40R21	28.7	9.6	702
285/35R21	28.9	11.2	699
335/30R21	28.9	13.2	698
255/40R21	29.0	10.0	695
295/35R21	29.1	11.6	692
235/45R21	29.3	9.3	688
265/40R21	29.3	10.4	687
275/40R21	29.7	10.8	680
245/45R21	29.7	9.6	679
315/35R21	29.7	12.4	679
285/40R21	30.0	11.2	673
255/45R21	30.0	10.0	671
235/50R21	30.3	9.3	667
295/40R21	30.3	11.6	666
265/45R21	30.4	10.4	664
275/45R21	30.7	10.8	656
315/40R21	30.9	12.4	652
255/50R21	31.0	10.0	650
285/45R21	31.1	11.2	649
275/50R21	31.8	10.8	634

22-inch wheels

Size	Diameter	Width	Revs/mi
235/30R22	27.6	9.3	732
245/30R22	27.8	9.6	726
295/25R22	27.8	11.6	725
255/30R22	28.0	10.0	720
315/25R22	28.2	12.4	715
265/30R22	28.3	10.4	714
275/30R22	28.5	10.8	708
335/25R22	28.6	13.2	705
285/30R22	28.7	11.2	702
295/30R22	29.0	11.6	696
255/35R22	29.0	10.0	695
265/35R22	29.3	10.4	688
315/30R22	29.4	12.4	685
275/35R22	29.6	10.8	682
285/35R22	29.9	11.2	676
255/40R22	30.0	10.0	672
295/35R22	30.1	11.6	669
265/40R22	30.3	10.4	665
275/40R22	30.7	10.8	658
325/35R22	31.0	12.8	651
285/40R22	31.0	11.2	651
255/45R22	31.0	10.0	650
295/40R22	31.3	11.6	645
305/40R22	31.6	12.0	638
275/45R22	31.7	10.8	635
285/45R22	32.1	11.2	628
265/50R22	32.4	10.4	622
305/45R22	32.8	12.0	615
275/50R22	32.8	10.8	614
315/45R22	33.2	12.4	608
355/40R22	33.2	14.0	608
285/50R22	33.2	11.2	607
295/50R22	33.6	11.6	600
305/50R22	34.0	12.0	593
285/55R22	34.3	11.2	587
295/55R22	34.8	11.6	580
325/50R22	34.8	12.8	580
305/55R22	35.2	12.0	573
375/45R22	35.3	14.8	572
33x12.50R22	33.0	12.5	611
35x12.50R22	35.0	12.5	576
37x12.50R22	37.0	12.5	545
37x13.50R22	37.0	13.5	545
38x13.50R22	38.0	13.5	531
38x15.50R22	38.0	15.5	531
40x15.50R22	40.0	15.5	504
42x15.50R22	42.0	15.5	480

23-inch wheels

Size	Diameter	Width	Revs/mi
285/35R23	30.9	11.2	654
295/35R23	31.1	11.6	648
305/40R23	32.6	12.0	619

24-inch wheels

Size	Diameter	Width	Revs/mi
275/25R24	29.4	10.8	686
295/30R24	31.0	11.6	651
285/35R24	31.9	11.2	633
295/35R24	32.1	11.6	628
305/35R24	32.4	12.0	622
285/40R24	33.0	11.2	612
295/45R24	34.5	11.6	585
315/45R24	35.2	12.4	574
355/40R24	35.2	14.0	573
325/45R24	35.5	12.8	568
375/40R24	35.8	14.8	563
315/50R24	36.4	12.4	554
35x12.50R24	35.0	12.5	576
37x13.50R24	37.0	13.5	545
38x13.50R24	38.0	13.5	531
40x15.50R24	40.0	15.5	504
42x15.50R24	42.0	15.5	480

26-inch wheels

Size	Diameter	Width	Revs/mi
40x15.50R26	40.0	15.5	504
42x15.50R26	42.0	15.5	480

Revolutions per mile chart · Converter

Important: These are calculated (nominal) dimensions, not a fitment recommendation. Real tires of the same size differ by brand and model (makers allow about ±3% of section height), and width changes with the rim it is mounted on. The math can't see wheel width and offset, clearance at full steering lock and suspension travel, load index, speed rating, or what your vehicle maker approves. Before changing size, check your door-jamb placard and owner's manual and ask a tire professional. A replacement tire must meet or exceed the load index and speed rating on the placard.