TyreCalc
Tyre Sizes · Fuel Cost · MPG

Reference chart

Tyre size chart — 326 common sizes

Every common tyre size in one table: width, aspect ratio, rim diameter, overall diameter, sidewall height, circumference and revolutions per mile. Dimensions are nominal — the exact diameter varies slightly by manufacturer and tread design.

Tyre sizeWidth (mm)Aspect ratioRim (in)Diameter (mm)Sidewall (mm)Circumference (mm)Revs / mile
145/80R131458013562.21161766.2911.2
155/65R131556513531.7100.81670.4963.5
155/70R131557013547.2108.51719.1936.2
155/80R131558013578.21241816.5886
165/60R131656013528.2991659.4969.8
165/65R131656513544.7107.21711.2940.5
165/70R131657013561.2115.51763.1912.8
175/60R131756013540.21051697.1948.3
175/65R131756513557.7113.81752.1918.5
175/70R131757013575.2122.51807890.6
185/60R131856013552.21111734.8927.7
185/70R131857013589.2129.51851869.4
155/65R141556514557.1100.81750.2919.5
155/70R141557014572.6108.51798.9894.6
165/60R141656014553.6991739.2925.3
165/65R141656514570.1107.21791898.6
165/70R141657014586.6115.51842.9873.3
165/75R141657514603.1123.81894.7849.4
175/60R141756014565.61051776.9905.7
175/65R141756514583.1113.81831.9878.5
175/70R141757014600.6122.51886.8852.9
175/75R141757514618.1131.21941.8828.8
185/55R141855514559.1101.81756.5916.2
185/60R141856014577.61111814.6886.9
185/65R141856514596.1120.21872.7859.4
185/70R141857014614.6129.51930.8833.5
185/75R141857514633.1138.81988.9809.1
195/60R141956014589.61171852.3868.8
195/65R141956514609.1126.81913.5841
195/70R141957014628.6136.51974.8814.9
195/75R141957514648.1146.22036.1790.4
205/60R142056014601.61231890851.5
205/65R142056514622.1133.21954.4823.5
205/70R142057014642.6143.52018.8797.2
205/75R142057514663.1153.82083.2772.5
215/70R142157014656.6150.52062.8780.2
155/80R1515580156291241976.1814.4
165/70R151657015612115.51922.7837
165/80R1516580156451322026.3794.2
175/65R151756515608.5113.81911.7841.9
175/70R151757015626122.51966.6818.3
175/80R1517580156611402076.6775
185/55R151855515584.5101.81836.3876.4
185/60R1518560156031111894.4849.5
185/65R151856515621.5120.21952.5824.2
185/70R151857015640129.52010.6800.4
185/80R1518580156771482126.9756.7
195/45R151954515556.587.81748.3920.5
195/50R15195501557697.51809.6889.4
195/55R151955515595.5107.21870.8860.2
195/60R1519560156151171932.1833
195/65R151956515634.5126.81993.3807.4
195/70R151957015654136.52054.6783.3
195/80R1519580156931562177.1739.2
205/45R152054515565.592.21776.6905.9
205/50R152055015586102.51841874.2
205/55R152055515606.5112.81905.4844.6
205/60R1520560156271231969.8817
205/65R152056515647.5133.22034.2791.2
205/70R152057015668143.52098.6766.9
205/75R152057515688.5153.82163744
215/45R152154515574.596.81804.8891.7
215/60R1521560156391292007.5801.7
215/65R152156515660.5139.82075775.6
215/70R152157015682150.52142.6751.1
215/75R152157515703.5161.22210.1728.2
225/50R152255015606112.51903.8845.3
225/60R1522560156511352045.2786.9
225/65R152256515673.5146.22115.9760.6
225/70R152257015696157.52186.5736
225/75R152257515718.5168.82257.2713
235/50R152355015616117.51935.2831.6
235/60R1523560156631412082.9772.7
235/70R152357015710164.52230.5721.5
235/75R152357515733.5176.22304.4698.4
245/50R152455015626122.51966.6818.3
245/60R1524560156751472120.6758.9
255/60R1525560156871532158.3745.7
255/70R152557015738178.52318.5694.1
265/70R152657015752185.52362.5681.2
265/75R152657515778.5198.82445.7658
275/60R1527560157111652233.7720.5
285/70R152857015780199.52450.4656.8
295/50R152955015676147.52123.7757.8
175/60R161756016616.41051936.5831.1
175/65R161756516633.9113.81991.5808.1
185/55R161855516609.9101.81916.1839.9
185/60R161856016628.41111974.2815.2
185/65R161856516646.9120.22032.3791.9
185/70R161857016665.4129.52090.4769.9
185/75R161857516683.9138.82148.5749
195/45R161954516581.987.81828.1880.3
195/50R161955016601.497.51889.4851.8
195/55R161955516620.9107.21950.6825
195/60R161956016640.41172011.9799.9
195/65R161956516659.9126.82073.1776.3
195/70R161957016679.4136.52134.4754
195/75R161957516698.9146.22195.7733
205/45R162054516590.992.21856.4866.9
205/50R162055016611.4102.51920.8837.9
205/55R162055516631.9112.81985.2810.7
205/60R162056016652.41232049.6785.2
205/65R162056516672.9133.22114761.3
205/70R162057016693.4143.52178.4738.8
205/75R162057516713.9153.82242.8717.6
215/45R162154516599.996.81884.6853.9
215/50R162155016621.4107.51952.2824.4
215/55R162155516642.9118.22019.7796.8
215/60R162156016664.41292087.3771
215/65R162156516685.9139.82154.8746.9
215/70R162157016707.4150.52222.4724.2
215/75R162157516728.9161.22289.9702.8
225/45R162254516608.9101.21912.9841.3
225/50R162255016631.4112.51983.6811.3
225/55R162255516653.9123.82054.3783.4
225/60R162256016676.41352125757.3
225/65R162256516698.9146.22195.7733
225/70R162257016721.4157.52266.3710.1
225/75R162257516743.9168.82337688.6
235/45R162354516617.9105.81941.2829.1
235/50R162355016641.4117.52015798.7
235/55R162355516664.9129.22088.8770.4
235/60R162356016688.41412162.7744.1
235/65R162356516711.9152.82236.5719.6
235/70R162357016735.4164.52310.3696.6
235/75R162357516758.9176.22384.2675
245/45R162454516626.9110.21969.5817.1
245/50R162455016651.4122.52046.4786.4
245/55R162455516675.9134.82123.4757.9
245/60R162456016700.41472200.4731.4
245/70R162457016749.4171.52354.3683.6
245/75R162457516773.9183.82431.3661.9
255/55R162555516686.9140.22158745.8
255/60R162556016712.41532238.1719.1
255/65R162556516737.9165.82318.2694.2
255/70R162557016763.4178.52398.3671
265/70R162657016777.4185.52442.3659
265/75R162657516803.9198.82525.5637.2
275/70R162757016791.4192.52486.3647.3
195/45R171954517607.387.81907.9843.5
195/55R171955517646.3107.22030.4792.6
205/40R172054017595.8821871.8859.8
205/45R172054517616.392.21936.2831.2
205/50R172055017636.8102.52000.6804.4
205/55R172055517657.3112.82065779.4
205/60R172056017677.81232129.4755.8
205/65R172056517698.3133.22193.8733.6
215/40R172154017603.8861896.9848.4
215/45R172154517625.396.81964.4819.2
215/50R172155017646.8107.52032792
215/55R172155517668.3118.22099.5766.5
215/60R172156017689.81292167.1742.6
215/65R172156517711.3139.82234.6720.2
225/40R172254017611.8901922837.3
225/45R172254517634.3101.21992.7807.6
225/50R172255017656.8112.52063.4779.9
225/55R172255517679.3123.82134.1754.1
225/60R172256017701.81352204.8729.9
225/65R172256517724.3146.22275.5707.3
225/70R172257017746.8157.52346.1686
235/40R172354017619.8941947.2826.5
235/45R172354517643.3105.82021796.3
235/50R172355017666.8117.52094.8768.3
235/55R172355517690.3129.22168.6742.1
235/60R172356017713.81412242.5717.7
235/65R172356517737.3152.82316.3694.8
235/70R172357017760.8164.52390.1673.3
245/40R172454017627.8981972.3816
245/45R172454517652.3110.22049.3785.3
245/50R172455017676.8122.52126.2756.9
245/55R172455517701.3134.82203.2730.5
245/60R172456017725.81472280.2705.8
245/65R172456517750.3159.22357.1682.8
245/70R172457017774.8171.52434.1661.2
255/40R172554017635.81021997.4805.7
255/45R172554517661.3114.82077.5774.6
255/50R172555017686.8127.52157.6745.9
255/55R172555517712.3140.22237.8719.2
255/60R172556017737.81532317.9694.3
255/65R172556517763.3165.82398671.1
255/70R172557017788.8178.52478.1649.4
265/60R172656017749.81592355.6683.2
265/65R172656517776.3172.22438.8659.9
265/70R172657017802.8185.52522.1638.1
275/40R172754017651.81102047.7785.9
275/45R172754517679.3123.82134.1754.1
275/50R172755017706.8137.52220.5724.8
275/55R172755517734.3151.22306.9697.6
275/60R172756017761.81652393.3672.4
275/65R172756517789.3178.82479.7649
285/60R172856017773.81712431662
285/70R172857017830.8199.52610616.6
295/70R172957017844.8206.52654606.4
305/65R173056517828.3198.22602.2618.5
315/60R173156017809.81892544.1632.6
205/40R182054018621.2821951.6824.6
205/45R182054518641.792.22016798.3
215/35R182153518607.775.21909.1843
215/40R182154018629.2861976.7814.2
215/45R182154518650.796.82044.2787.3
215/50R182155018672.2107.52111.8762.1
215/55R182155518693.7118.22179.3738.5
225/35R182253518614.778.81931.1833.4
225/40R182254018637.2902001.8803.9
225/45R182254518659.7101.22072.5776.5
225/50R182255018682.2112.52143.2750.9
225/55R182255518704.7123.82213.9726.9
225/60R182256018727.21352284.6704.4
235/35R182353518621.782.21953.1824
235/40R182354018645.2942027794
235/45R182354518668.7105.82100.8766.1
235/50R182355018692.2117.52174.6740.1
235/55R182355518715.7129.22248.4715.8
235/60R182356018739.21412322.3693
235/65R182356518762.7152.82396.1671.7
245/35R182453518628.785.81975.1814.8
245/40R182454018653.2982052.1784.2
245/45R182454518677.7110.22129.1755.9
245/50R182455018702.2122.52206729.5
245/55R182455518726.7134.82283704.9
245/60R182456018751.21472360681.9
255/35R182553518635.789.21997.1805.8
255/40R182554018661.21022077.2774.8
255/45R182554518686.7114.82157.3746
255/50R182555018712.2127.52237.4719.3
255/55R182555518737.7140.22317.6694.4
255/60R182556018763.21532397.7671.2
255/65R182556518788.7165.82477.8649.5
265/35R182653518642.792.82019.1797.1
265/40R182654018669.21062102.4765.5
265/45R182654518695.7119.22185.6736.3
265/50R182655018722.2132.52268.9709.3
265/60R182656018775.21592435.4660.8
265/65R182656518801.7172.22518.6639
275/35R182753518649.796.22041.1788.5
275/40R182754018677.21102127.5756.5
275/45R182754518704.7123.82213.9726.9
275/55R182755518759.7151.22386.7674.3
275/60R182756018787.21652473.1650.7
275/65R182756518814.7178.82559.5628.8
285/60R182856018799.21712510.8641
285/65R182856518827.7185.22600.3618.9
305/60R183056018823.21832586.2622.3
215/35R192153519633.175.21988.9809.1
225/35R192253519640.178.82010.9800.3
225/40R192254019662.6902081.6773.1
225/45R192254519685.1101.22152.3747.7
225/55R192255519730.1123.82293.7701.6
235/35R192353519647.182.22032.9791.6
235/40R192354019670.6942106.8763.9
235/45R192354519694.1105.82180.6738
235/50R192355019717.6117.52254.4713.9
235/55R192355519741.1129.22328.2691.2
245/35R192453519654.185.82054.9783.2
245/40R192454019678.6982131.9754.9
245/45R192454519703.1110.22208.9728.6
245/50R192455019727.6122.52285.8704.1
245/55R192455519752.1134.82362.8681.1
255/35R192553519661.189.22076.9774.9
255/40R192554019686.61022157746.1
255/45R192554519712.1114.82237.1719.4
255/50R192555019737.6127.52317.2694.5
255/55R192555519763.1140.22397.3671.3
255/60R192556019788.61532477.5649.6
265/35R192653519668.192.82098.9766.8
265/40R192654019694.61062182.2737.5
265/45R192654519721.1119.22265.4710.4
265/50R192655019747.6132.52348.7685.2
265/60R192656019800.61592515.2639.9
275/30R192753019647.682.52034.5791
275/35R192753519675.196.22120.9758.8
275/40R192754019702.61102207.3729.1
275/45R192754519730.1123.82293.7701.6
275/55R192755519785.1151.22466.5652.5
285/35R192853519682.199.82142.9751
285/40R192854019710.61142232.4720.9
285/45R192854519739.1128.22322693.1
295/35R192953519689.1103.22164.9743.4
305/30R193053019665.691.52091769.6
225/35R202253520665.578.82090.7769.8
225/40R202254020688902161.4744.6
235/35R202353520672.582.22112.7761.7
235/40R202354020696942186.5736
235/45R202354520719.5105.82260.4712
235/50R202355020743117.52334.2689.5
235/55R202355520766.5129.22408668.3
245/35R202453520679.585.82134.7753.9
245/40R202454020704982211.7727.7
245/45R202454520728.5110.22288.7703.2
245/50R202455020753122.52365.6680.3
255/35R202553520686.589.22156.7746.2
255/40R2025540207121022236.8719.5
255/45R202554520737.5114.82316.9694.6
255/50R202555020763127.52397671.4
255/55R202555520788.5140.22477.1649.7
265/40R2026540207201062261.9711.5
265/45R202654520746.5119.22345.2686.2
265/50R202655020773132.52428.5662.7
265/55R202655520799.5145.82511.7640.7
275/40R2027540207281102287.1703.7
275/45R202754520755.5123.82373.5678.1
275/50R202755020783137.52459.9654.2
275/55R202755520810.5151.22546.3632
275/60R2027560208381652632.7611.3
285/40R2028540207361142312.2696
285/45R202854520764.5128.22401.7670.1
285/50R202855020793142.52491.3646
285/55R202855520821.5156.82580.8623.6
285/60R2028560208501712670.4602.7
295/45R202954520773.5132.82430662.3
305/45R203054520782.5137.22458.3654.7
245/35R212453521704.985.82214.5726.7
255/35R212553521711.989.22236.5719.6
255/40R212554021737.41022316.6694.7
265/35R212653521718.992.82258.5712.6
275/35R212753521725.996.22280.5705.7
275/40R212754021753.41102366.9679.9
285/35R212853521732.999.82302.5699
295/35R212953521739.9103.22324.5692.4
305/35R213053521746.9106.82346.5685.9
265/35R222653522744.392.82338.3688.3
275/40R222754022778.81102446.7657.8
285/35R222853522758.399.82382.3675.6
285/40R222854022786.81142471.8651.1
305/35R223053522772.3106.82426.3663.3
305/40R223054022802.81222522.1638.1

How to read a tyre size

Take 205/55R16: 205 is the width in millimetres, 55 is the aspect ratio (the sidewall height is 55% of the width), R means radial construction, and 16 is the rim diameter in inches. The numbers after it — for example 91V — are the load index (91 = 615 kg per tyre) and the speed rating (V = up to 149 mph). Read the full decoding in the tyre size guides, or compare two sizes side by side in the tyre comparisons.

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