2017 Civic Si - The Dreaded Winter Tire Question

What are yall running on your Si's for winter? Are we able to downsize to a 17 with our brakes, or are we stuck at $1200 winter tires on our 18's? Just planning ahead a bit since I'll be commuting an hour on the highway each way, starting the end of August.

I downgraded to 17inch steelies. I ran Winterforce 2 with great results in Buffalo winter

Edit: 215/50, 17 Size tires on 17x6.5 steelies

ToastedSi said:

I downgraded to 17inch steelies. I ran Winterforce 2 with great results in Buffalo winter

Edit: 215/50, 17 Size tires on 17x6.5 steelies

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Nice. I'm glad to hear the 17's fit around our brakes. I'm up near Toronto myself, so I'm dealing with the same winter as you!

i did 17s on steels no problems.

Running 17" Tirerack brand wheels myself. No clearance issues.

I'll be grabbing 17" wheels and throwing snow tires on them. Usually in the past I've run General Altimax Arctic's, but am unsure what I'll go with this time around for this car. The narrower the tire the better though, as it gets more weight down in a smaller area for bite and traction.

Travie_FC3 said:

Nice. I'm glad to hear the 17's fit around our brakes. I'm up near Toronto myself, so I'm dealing with the same winter as you!

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Tire Rack says that 16's will fit. I have a set of 16 inch Accord alloys that I'm going to try fitting on the car tomorrow.

sjd said:

Tire Rack says that 16's will fit. I have a set of 16 inch Accord alloys that I'm going to try fitting on the car tomorrow.

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Let me know if that works. I don't think 16's will fit

I 'd be very surprised if a 16'' can pass over the front calipers.
The last 2 winters, I drove Toyo Observe Garrit 215 x 50 monted on
SI 2008 mags purchased on KiJiJi. They are 17s.
I had to grind them back with a little grinder so they would not
rub on the front calipers.
It's much more beautiful than black steel rims.

16’s won’t clear the front brake calipers. They would fit on the 9gen Si but not our 10’s. I run 17x7 steels with 225/45/17 . Blizzaks. If you already have the rims give it a go, nothing lost.

I did give it a go as I ended up with the 16 inch Accord alloys given to me by a friend and unsurprisingly, they do not clear the calipers. I wonder why Tire Rack lists 16’s as an option?

So that means I can sell the winter tires from my 9th gen Si. I do have a set of 17 inch winter tires than I can use but I’ll need to find wheels.

Most importantly my 17x8 track wheels and RE7R1’s fit perfect and we’ll see how the car is at autocross tomorrow.

If you really want to run sub 17" rims on the Front of the Si, you will need to fit smaller diameter aftermarket calipers. Then you can get down to 16", or even 15"

There are aftermarket calipers that fit the Genx Si, that CLAIM to have equal, if not greater breaking ability than the oem Honda ones, similar area, but less overall diameter.

16" should fit on the rear -- not sure about 15"

SCOPESYS said:

If you really want to run sub 17" rims on the Front of the Si, you will need to fit smaller diameter aftermarket calipers. Then you can get down to 16", or even 15"

There are aftermarket calipers that fit the Genx Si, that CLAIM to have equal, if not greater breaking ability than the oem Honda ones, similar area, but less overall diameter.

16" should fit on the rear -- not sure about 15"

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If somebody really wanted to save some money, they could stagger and put 17's on the front and 16's on the rear as long as the outer diameter is the same. But if pinching pennies is that important, its probably time to sell the Si

Quick question guys. 2019 civic si. Recently put on steelies 225 50 17R
I just noticed how bad the negative camber is on the rear. Is that normal?