175/65R17 vs 195/50R19 tire size comparison

Change either size and everything below updates.

Start from your car make, model, year
Current tire size
/R
xR
New tire size
/R
xR

Width in mm · aspect = sidewall height as a % of width · rim in inches

Flotation (LT) sizes, all in inches: overall diameter × section width, then rim

175/65R17: 25.96″ (659 mm) tall, 6.89″ (175 mm) wide, sidewall 4.48″ (114 mm) — 777 revolutions per mile.

Within the usual 3% rule

+2.78% diameter

Most fitment guides accept up to 3%. Check clearance at full lock and full suspension compression before committing.

  • Needs 19″ wheels: this tire does not fit your 17″ rims.
  • 20 mm wider: check inner clearance and that your rims are wide enough.

TireWheelGuide may earn a commission from purchases made through these links.

Measurement175/65R17195/50R19Diff%
Overall diameter25.96″659 mm26.68″678 mm+0.72″+2.8%
Section width175.0 mm195.0 mm+20.0 mm+11.4%
Sidewall height113.8 mm97.5 mm−16.3 mm−14.3%
Rim diameter17″19″+2″+11.8%
Circumference81.55″2071 mm83.81″2129 mm+2.26″+2.8%
Revolutions per mileturns per distance; drives the odometer777483 /km756470 /km−21−2.7%
Ride height change——+0.36″ +9.1 mm

Speedometer reading

Speedo shows
60mph
97 km/h
Actual speed
61.7mph
99 km/h

Overlay

175/65R17195/50R19

Plus sizing: 175/65R17 on smaller or bigger wheels

Sizes fitted to cars that keep the overall diameter within 3% of 175/65R17 on a rim one inch smaller or up to two inches bigger, closest first.

RimSizeDiameterChangeCompare
R16 (−1) 195/65R16 25.98″ +0.1% Compare
185/70R16 26.20″ +0.9% Compare
R18 (+1) 205/50R18 26.07″ +0.4% Compare
175/60R18 26.27″ +1.2% Compare
R19 (+2) 195/45R19 25.91″ −0.2% Compare
195/50R19 26.68″ +2.8% Compare

How to use the tire size calculator

Put your current tire size — width, aspect ratio and rim diameter — into the first form, then your desired size into the second. You’ll get the difference between the new and the old size, plus the speedometer reading difference and your actual speed on the new set. Both metric and flotation (LT inch) sizes are supported.

The calculator helps you decide whether a set of tires and wheels will fit your car. To compare tires by brand and model instead, use our tire comparison tool; to look up factory sizes, browse by car make.

Changing wheels too? The wheel offset calculator shows how far a new wheel width and offset move the tire toward the suspension and the fender.

Reading a tire size

225/45R17
225
Section width in millimetres
45
Aspect ratio — sidewall height as a % of width
R
Radial construction
17
Rim diameter in inches

Full guide to the tire sidewall →