Every tire sold in Egypt has its full specification printed directly on the sidewall, in a format that looks like a code but is actually just a compact list of facts. Take a common size like 205/55R16 91V — once you know how to read it, you can check any tire in five seconds instead of guessing.
Width — the first number
The 205 is the tire’s width in millimeters, measured from sidewall to sidewall. A wider tire generally means more contact with the road, which can help with grip but also tends to increase price and sometimes fuel use slightly.
Aspect ratio — the number after the slash
The 55 is the aspect ratio: the tire’s sidewall height as a percentage of its width. Here, the sidewall is 55% of 205mm tall. A lower number (like 40 or 45) means a shorter, stiffer sidewall — common on performance and larger-wheel setups. A higher number (60, 65, 70) means a taller sidewall, which usually rides more comfortably and better absorbs Cairo’s rougher road patches.
Construction — the letter before the rim size
The R stands for radial construction, which is what almost every passenger tire sold today uses (the internal belts run radially across the tire). You will occasionally see other letters on older or specialty tires, but radial is the standard to expect.
Rim diameter — the number after R
The 16 is the wheel diameter in inches that the tire is built to fit. This number has to match your rim exactly — there is no “close enough” here.
Load index — the number after the rim size
The 91 is a load index, a code (not a direct weight) that maps to a maximum load the tire can safely carry per tire at full inflation. A higher number supports more weight. This matters more than most drivers realize for vehicles that regularly carry heavy loads — vans, pickups, and larger SUVs in particular.
Speed rating — the final letter
The V is the speed rating, a letter code for the maximum speed the tire is rated to sustain under its rated load. It is a safety ceiling, not a target — fitting a tire with a rating below your vehicle manufacturer’s recommendation is not advisable.
Where to find your car’s correct size
Your vehicle’s original size (and often an alternate size) is printed on a sticker inside the driver’s door jamb, and also listed in the owner’s manual. That sticker, not the tire currently mounted (which may have been swapped at some point), is the reliable source.
Finding the right tire at Go Mina
Go Mina’s tire catalog is searchable directly by size — enter the width, aspect ratio, and rim diameter and the filters narrow to what’s actually in stock, across brands like Sailun and Nankang. If you’re not sure which size fits your car, send a photo of your door jamb sticker on WhatsApp and we’ll confirm before you buy.