Skip to main content
TireShopper

265/50R20 vs LT245/75R16 tire size comparison

265/50R20LT245/75R16

LT245/75R16 is 0.1 in (0.12%) taller than 265/50R20 and 0.8 in narrower. They fit different wheels: 265/50R20 a 20-inch wheel and LT245/75R16 a 16-inch wheel.

265/50R20 and LT245/75R16 side by side

+0.1 in / +0.12%265/50R20: 30.4 in tall, solid lineLT245/75R16: 30.5 in tall, dashed line265/50R20Width 10.4 in (265 mm)Sidewall 5.2 in (133 mm)LT245/75R16Width 9.6 in (245 mm)Sidewall 7.2 in (184 mm)
265/50R20 is drawn with a solid line and LT245/75R16 with a dashed line. In each drawing both tires are to the same scale; the tread shoulder and bead curves are simplified. The table below has the same numbers.
Dimensions of 265/50R20 and LT245/75R16, with the difference (LT245/75R16 minus 265/50R20)
Measurement265/50R20LT245/75R16DifferenceDifference %
Section width10.4 in (265 mm)9.6 in (245 mm)-0.8 in (-20 mm)-7.55%
Sidewall height5.2 in (133 mm)7.2 in (184 mm)+2.0 in (+51 mm)+38.68%
Wheel (rim) diameter20.0 in (508 mm)16.0 in (406 mm)-4.0 in (-102 mm)-20.00%
Overall diameter30.4 in (773 mm)30.5 in (774 mm)+0.1 in (+1 mm)+0.12%
Circumference95.6 in (2428 mm)95.7 in (2431 mm)+0.1 in (+3 mm)+0.12%
Revolutions per mile663662-1-0.12%

Differences are LT245/75R16 minus 265/50R20; percentages are relative to 265/50R20. These are nominal design dimensions. Real tires vary by brand, tread depth, wheel width, load and pressure.

The overall diameter differs by 0.12%, which is within the common 3% rule of thumb.

The rule of thumb keeps a replacement size within about 3% of the original overall diameter. It covers diameter only. It is not a fit, load or safety check, because width, wheel diameter, load capacity and clearance matter too. Confirm any size change with your vehicle's owner's manual or a tire professional.

Speedometer difference

When the speedometer reads 60 mph on a vehicle built for 265/50R20, the actual speed on LT245/75R16 is about 60.1 mph. When it reads 60 mph on a vehicle built for LT245/75R16, the actual speed on 265/50R20 is about 59.9 mph. These figures assume the speedometer is accurate on the original size and use nominal dimensions, so treat them as estimates.

Actual speed for a given speedometer reading, 265/50R20 against LT245/75R16
Speedometer readsActual on LT245/75R16 (built for 265/50R20)Actual on 265/50R20 (built for LT245/75R16)
20 mph20.0 mph20.0 mph
30 mph30.0 mph30.0 mph
40 mph40.0 mph40.0 mph
50 mph50.1 mph49.9 mph
60 mph60.1 mph59.9 mph
70 mph70.1 mph69.9 mph
80 mph80.1 mph79.9 mph

A common rule of thumb is to keep a replacement size within about 3% of the original overall diameter. Check the tire placard on the driver's door jamb and your owner's manual for the sizes your vehicle was built for. Confirm any size change with your vehicle's owner's manual or a tire professional.

Which vehicles use each size?

These vehicles list the size among their verified sizes, by trim. Open one to see all of its sizes.

Check it in the calculator

The calculator takes the same two sizes and shows the full comparison, or lets you swap either one for another size.

Open this comparison in the calculator

Shop for 265/50R20 or LT245/75R16 tires

Confirm the size on your tire sidewall or door placard first. These links open each store's own search; prices and stock are on their sites.

We may earn a commission if you buy through these links. It doesn't change the price you pay. Read our affiliate disclosure.

Other comparisons with 265/50R20

Side-by-side dimensions and speedometer difference for sizes close to 265/50R20 in overall diameter.

Other comparisons with LT245/75R16

Side-by-side dimensions and speedometer difference for sizes close to LT245/75R16 in overall diameter.

You might also need

Paid links to Amazon search results. As an Amazon Associate I earn from qualifying purchases. Read our affiliate disclosure.