## What is the difference between 225 and 55?

**The 225 is the width of the tread, in mm.** **The 50 (or 55) is the height of the sidewall, as a percentage of the width**. That’s your aspect ratio. With a 55 aspect ratio, and a 225 treadwidth, you’ll end up with a tire that is 3/4 of an inch taller that the 225/50.

## What is the difference between 225 50r17 and 225 55r17?

Usually the lower the two-digit number, the wider the tire. The three digits (225) following the service type, tell us the cross-section width of the tire in millimerters. In the example, **the 50 width tire will bethe wider tire, whiler 55 will be slightly taller**.

## What does the letter R in P225 55 R17 stand for?

R stands for **radial construction**. B means belted bias and D stands for diagonal bias construction. 17 The last dimension listed in the size is the diameter of the wheel rim, which is most often measured in inches. LOAD INDEX AND SPEED RATING. Example: P225/50/R17 98H.

## What is the difference between 225 65r17 and 225 55r17?

The difference in the dimension of the two tyres is purely in the aspect ratio of the sidewall so **the /65 tyres will have a bigger sidewall** (note that the number is 65% of the width, not 65 somethings – i.e. 165.75mm vs 140.25mm and that’s effectively doubled because you’re taking radius, not diameter) and therefore …

## Is a 50 or 60 tire wider?

For example, a 60-series tire features a sidewall that is 60% as tall as the tire’s section width. **A 50-series tire will feature a shorter sidewall, at 50% of section width**.

## Can I use 225 50r17 instead of 225 60r17?

**Most likely no major problems, your speedometer would be off a bit**. What brand of tires are you thinking of running? Depending on the width of the wheel, might just go wider with a 225/50/17 as opposed to a bigger larger sidewall. These are your plus zero sizes to stay similar to what you have now.

## How tall is a 225 55r17 tire?

225/55R17 Conversion

Metric | Inches | |
---|---|---|

Overall Diameter (Tire Height) | 680 mm |
26.8″ |

Tread Width | 225 mm | 8.9″ |

Rim Diameter | 431.8 mm | 17″ |

Sidewall Height | 124 mm | 4.9″ |

## Can I use 215 50R17 instead of 225 50R17?

Banned. **It will be fine not much of a different at all**. It will throw your speedometer off a little.

## What does P225 50R17 mean?

What 225/50R17 Means. **The number 225 identifies the tire section width** (the measurement of the tire from sidewall to sidewall in millimeters). This tire has an aspect ratio of 50 means that the tire’s section height is 50% of the tire’s section width.

## Can I use 235 55r17 instead of 235 65r17?

**It is OK.** **As long as they are all the same**.

## What does p215 55r17 mean?

215. This number indicates that your tire has a width of 215 millimeters. 55. This number means that **your tire has an aspect ratio of 55%**. In other words, your tire’s sidewall height (from the edge of the rim to the tire’s tread) is 55% of the width.

## What does the V stand for in tyre size?

Speed ratings

V – Speed ratings are represented by letters ranging from A to Z. Each letter coincides to the **maximum speed a tire can sustain under its recommended load capacity**. For instance, V is equivalent to a maximum speed of 149 mph.

## What does the 55 stand for on a tire?

aspect ratio

The “55” grouping is the **aspect ratio** and is by far one of the most misunderstood dimensions. This is the height of the sidewall from wheel to tread relative to the width. Manufacturer’s represent this measurement in a percentage, so in our example, the sidewall is 129.25 millimeters — 5.08 inches — tall (235 x 0.55).

## What does 60 mean on a tire?

/60 = **Aspect Ratio or section height to width ratio as a percentage**. For this example, the side wall is 60% of the section width of the tire (265mm x . 60 = 159mm). Therefore, the sidewall height is 159mm.

## What’s the best speed rating for tires?

Z

As manufacturers developed bigger and better tires, it became necessary to regulate performance at standardized speeds to ensure safety. The “Limited V” category of 250 km/h (149 mph) was then created, and eventually the **“Z”** speed rating was added as the top speed rating.

## Does tire speed rating matter?

**One of the most important aspects of any tire is its speed rating**. The wrong tires with a less-than-adequate speed rating for your vehicle can cause safety issues, including tire failure and a loss in fuel efficiency.