195 is the tyre width in millimetres, 60 is the sidewall height as a percentage of the width, R means radial construction, and 15 is the wheel diameter in inches. When buying, match these markings exactly to ensure proper fitment, handling and speedometer accuracy.
Confirm the size on your current tyre sidewall and cross-check your vehicle placard (usually inside the driver door or fuel flap) or handbook. If your car lists more than one approved size, stick to one of the listed options and keep the same size across each axle.
Not without checking manufacturer-approved alternatives first. A different profile or wheel diameter changes overall rolling radius, which can affect speedometer readings and clearance. If you want to change size, use only an officially approved equivalent and ensure the correct wheels are fitted for that alternative.
Choose at least the same load index and speed rating as your current tyres, or the minimum specified by the vehicle manufacturer. Common ratings in this size include 88H or 88V, but they vary by model and trim. If you regularly carry heavy loads, check whether your car specifies a higher load index or an XL (extra load) version.
For typical UK driving, summer tyres suit warmer conditions, all-season tyres offer year-round convenience with better cold and wet performance, and winter tyres are best if you face frequent snow, ice or sub-7C temperatures. Pick one type for consistent behaviour, and fit the same seasonal type across an axle to maintain balanced grip and braking.