So you have decided to upsize your wheel. When i mean upsize i mean putting a larger wheel.
Most cars comes with 14" & 15" as standard size apart from larger cars coming with 17" as standard..
For the average guy putting 17" ,18", 19" & 20" is quite popular. But before you rush out to the store to buy you should be aware of some terms which are offset & PCD.Offset
is normally stamped or engraved into the wheel and is measured in millimeters of ET: ET is the short form of the German word Einpresstiefe which translates as insertion depth.
Offset is the distance between the hub mounting face at the back of the wheel and the wheel's centerline.
Negative Offset wheels have their mounting face toward the rear of the wheel - powerful rear-wheel drive cars often have wheels with negative offset.
Zero Offset wheels have their mounting face even with the centerline of the wheel and are by definition ET0.
Positive Offset wheels have their mounting face toward the front face of the wheel. Front wheel drive vehicles usually have positive ET wheels. PCD
stands for pitch circle diameter and is the diameter of a circle drawn through the centre of your wheel's bolt holes. P.C.D. is measured in millimeters and also indicate the number of studs or bolts the wheel will have. Some cars are 4x100 etc.
Once you know your car specs you can safetly buy your wheels. Get this wrong and you put yourself not only discomfort but costly issues.
Now the next question why up size? Well these are the benefits. Benefits
Plus-Sizing will develop the handling of your car! Each step will decrease the proportion of flexible tire sidewall to rigid alloy. This will improve response, will help keep the tire tread square to the road and will improve your car's feedback. If done correctly speed and odometer accuracy will retain and the car look better.
Why not to?Disadvantages
Often, tire inches are lighter than wheel inches. Plus-sizing can make your overall wheel/tire package heavier. Reducing the profile of your tires will also decrease your car's damping deflection under compression the ride quality will get worse. Other disadvantages can include the need for more expensive tires, your brakes looking undersized and people's grannies laughing and calling your car a buggy.
But so far i really see no disadvantages, us Trinis like to run big & bling ..
Just remeber the larger the rim size the smaller the tire profile. From my experience potholes are not your friends so be on the look out for them. Hit that hard and start thinking of getting a new set of wheels.
Well that my contributions i am sure there is more to add...The next issue is what brand. There are so many brands out there. Thats another story..