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Hi can someone please tell me if it's okay to change my 16 inch alloy wheels and put
17inch on my 2011 swift, or will it affect the brakes.
 

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Hi can someone please tell me if it's okay to change my 16 inch alloy wheels and put
17inch on my 2011 swift, or will it affect the brakes.
I assume you are going lower profile to keep same overall diameter the same, then no, won't affect the brakes.
 

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I assume you are going lower profile to keep same overall diameter the same, then no, won't affect the brakes.
Ahhh - maintaining the same rolling diameter will not affect gearing/acceleration - whether or not braking is affected is a little more complex.

What impacts the braking is rotating mass, and the distance from center, both of which are going to change when you go to a larger rim. A larger rim puts the tire, which is the rotating mass, further from the axle so that it requires more braking effort to stop it, it you're running a lighter tire, it becomes a "non-issue", if you're running the same weight tire, the effect is minimal, if you're running a wider, lower profile tire, which is common, it can become a major issue.

Way back I used to run a Suzuki Swift, and I went from the stock 155/70R13 tires on steel wheels, to alloy wheels with 185/60R13 tires, the difference in diameter was 0.2", the weight difference was negligible as the lighter rims were offset by the heavier tire - braking was where the impact was most noticeable - the brakes did slow the car, but it was no longer possible to "lock" the front wheels up under braking, a combination of the rotating mass, and the extra rubber on the road - I fixed the problem by swapping in the larger brakes from the Swift GTi.
 
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