225 - Tire width
The width of the tire is measured in millimeters from sidewall to sidewall. The first three-digit number refers to how many mm wide it will be, and the second pair tells you what type or category this particular piece fits into - such as touring or off-road use!
50 - Tire Aspect
On the sidewall of every tire, there is a label that indicates its aspect ratio. This number represents how high up from rim to tread level it sits and what percentage this will be for any given width in millimeters or inches depending on which system they use!
R17 - Rim Diameter
The rim diameter of a wheel is the distance measured in inches across its face, from bead seat to opposite side. This measurement determines what kind or size tire will fit on top; it's important because that’s where our trusty partners-the rubber meets asphalt!
245 - Tire width
The width of the tire is measured in millimeters from sidewall to sidewall. The first three-digit number refers to how many mm wide it will be, and the second pair tells you what type or category this particular piece fits into - such as touring or off-road use!
40 - Tire Aspect
On the sidewall of every tire, there is a label that indicates its aspect ratio. This number represents how high up from rim to tread level it sits and what percentage this will be for any given width in millimeters or inches depending on which system they use!
R18 - Rim Diameter
The rim diameter of a wheel is the distance measured in inches across its face, from bead seat to opposite side. This measurement determines what kind or size tire will fit on top; it's important because that’s where our trusty partners-the rubber meets asphalt!
255 - Tire width
The width of the tire is measured in millimeters from sidewall to sidewall. The first three-digit number refers to how many mm wide it will be, and the second pair tells you what type or category this particular piece fits into - such as touring or off-road use!
35 - Tire Aspect
On the sidewall of every tire, there is a label that indicates its aspect ratio. This number represents how high up from rim to tread level it sits and what percentage this will be for any given width in millimeters or inches depending on which system they use!
R19 - Rim Diameter
The rim diameter of a wheel is the distance measured in inches across its face, from bead seat to opposite side. This measurement determines what kind or size tire will fit on top; it's important because that’s where our trusty partners-the rubber meets asphalt!
You have got your newly purchased 2009 Audi A4 home and would just love to upgrade its look - with decent tires. So you trust that you now have to decide on between the two: awesome look and safety. And would those great tires suit your trim? And is it even likely to integrate tires that will be of a larger size? Well, stay relaxed - you appeared here in the safe palms of specialists who have spent so many years collecting all sorts of different details to help individuals like you make a choice.
Hence, let's start with the safety issues of your respective 2009 Audi A4: our standard recommendation every time is to switch tires with the authentic size ones - based on the manufacturer. Changing a detail for a non-original one could affect the functionality of your respective automobile. In addition, switching tires for non-standard elements will surely imply guarantee coverage. Here are charts with every available 2009 Audi A4 trim, and thus you will only have to enter these details and a year of manufacture to find out all the options swiftly.
And ultimately, after you switch tires, don't neglect to keep them in right order. Attempt to constantly check the pressure and monitor the tread wear. In the US, you aren't allowed to have a protector less than 2/32''.