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Old 02-18-2021, 04:17 AM   #1
TheJewelThief
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Join Date: Jan 2021
Question Are My Brakes My Issue?

So I just recently got new rims+tires for my 2002 Impreza Outback Sport. Before I got the new wheels the car braked just fine with no issues at all. But since I got the new wheels the car seems to have a bit of trouble getting to a stop compared to before.

The new wheels I got are 17inch rims that weight about 3 pounds each heavier than stock. And I got new tires to match to original circumference of the OEM tire so I wouldn't have issues with the speedometer.

What I want to know is if I'm having issues with braking cause of the heavier wheels (which would make sense), or because it has been super cold where I am living. And if I should consider getting new brakes to help out. Any information is appreciated
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Old 02-18-2021, 07:25 AM   #2
snow_bound26
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The tires you have may have also increased the overall unsprung weight. Tire compound and air temp will play a role as well. Chances are it's a combination of all these things. But we can't really answer any questions without knowing:

-type of brake pad
-old tire/new tire and dimensions
-how cold is the weather (tire compound and brake pad type may/may not be affected by this)
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Old 02-18-2021, 04:28 PM   #3
TheJewelThief
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The rims are 19 pounds. I'm running 225/45 17 Michelin pilot sport 4's on all of them, I'm not sure how much the tires weight. They are the all season tires. I had stock rims that were about 16 pounds each with 205/55 16 firestone tires. I'm not sure how much those weighed either. The car has stock brake pads (I'm not sure what they are) that were replaced about 1 year ago. Everything is stock on the car except for the wheels. Its been averaging around 20 degrees Fahrenheit where I am living.

I mainly just want to know whether I should consider new brakes, or just pads, or no change at all. And of I do get new anything, what you all would suggest for a daily driver.

Last edited by TheJewelThief; 02-18-2021 at 06:10 PM.
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Old 02-18-2021, 08:18 PM   #4
snow_bound26
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Tire rack usually has the weights for all the tires they sell so you try to look them up there. You've probably added 5-8lbs per corner. More likely you're feeling the cold temps than the weight, but the weight can make a little difference. Tire compound will make a bigger difference and the other tires may have had a softer compound which will grip better during braking
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Old 02-19-2021, 08:45 AM   #5
Elbert Bass
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No, a few pounds more unsprung weight won't affect street braking. Has it been abnormally cold since you put the wheels on? Snow? Ice?
A car that old it could be cold, but most likely what I find is lack of lube on caliper pins, and/or rust/corrosion binding the pads in the brackets. Especially if the last brake job didn't do a good cleaning, replacing hardware and lubricating parts per manual.
Only way to know is pull the calipers and inspect all those parts for binding.
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