How to Measure Tire Rim Size

3. Tyre construction

R means that the tyre has radial ply construction, meaning the way in which it has been constructed. Most car tyres are constructed this way so you will rarely find a car tyre without an R

https://www.bridgestonetyres.co.nz/how-to-read-your-tyre-size

Vehicle Identification Numbers (VINS )


A Vehicle Identification Number (VIN) is a unique serial number used by the automotive industry to identify individual vehicles.

VIN characteristics 

VINs conform to two international standards: 

International Standards Organisation (currently ISO 3779 2009); and 

US Standard FMVSS 115; 

Every character in every position has a meaning relating to the make, model, year of manufacture and vehicle details; 

A VIN is always 17 characters long; 

A VIN can only be made up of the following characters: 0–9, A–Z (uppercase) excluding letters I, O and Q: This prevents confusion with visually similar numerals;
The first three characters make up the World Manufacturer Identifier (WMI). Every high volume manufacturer in the world is assigned its own WMI;
If the third character of the WMI is a 9, then this indicates a low volume manufacturer with positions 12–14 in the VIN indicating the low volume ID.
VINs can be decoded to identify this information so that the vehicle can be registered.