2020 Si Bore Size

simon_lefisch

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Hey everyone,

I just wanted to verify the bore size of the 2020 Si. I found this thread saying it is 64.1 but it was from 2015. I assume it hasn't changed but wanted to confirm as I am looking to get some new wheels in the next couple of months and want to make sure I get the correct O-rings.

Currently running stock wheels/tires but am looking at Konig Hypergram in Matte Gray, size 18x9.5 +35 offset
https://www.fitmentindustries.com/buy-wheel-offset/HG9851435G/konig-hypergram-18x95-35

Anyone have these? If so, can you post a pic of how they look? I currently have 20mm spacers on the stock wheels and they positioning is just perfect so looking for the same on the Konigs. Many thanks to all!
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360glitch

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64.1mm is correct for the 10th gen 1.5T Civics. Not sure about FK8 Type R.
 

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18x9.5 +35 is a fair bit wider. It won't be flush anymore, it'll poke. 18x8.5 +35 will be closer. My comparisons are based on an 18x8 stock wheel +50 with 20mm spacers which makes them 18x8+30.

And yes 67.1 bore for an Si.

Honda Civic 10th gen 2020 Si Bore Size Screenshot_20211015-163845_Chrome
Honda Civic 10th gen 2020 Si Bore Size Screenshot_20211015-164409_Chrome
 
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simon_lefisch

simon_lefisch

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18x9.5 +35 is a fair bit wider. It won't be flush anymore, it'll poke. 18x8.5 +35 will be closer. My comparisons are based on an 18x8 stock wheel +50 with 20mm spacers which makes them 18x8+30.

And yes 67.1 bore for an Si.

Screenshot_20211015-163845_Chrome.jpg
Screenshot_20211015-164409_Chrome.jpg
Thanks for info.

Unfortunately the Konigs dont come in 9" and I kind of wanted to go 9.5". With that being the case, I checked for a 30mm offset but thats not available either. I may need to look at another set of wheels if thats the case. I like how far the stocks are with the 20mm spacers so I'm trying to stick with that look. It sounds like I'll need to find a wheel that has a 30mm offset if I want to stick with 9.5" width, correct?
 
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simon_lefisch

simon_lefisch

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For reference, here is a pic of sticks with the spacers.

Honda Civic 10th gen 2020 Si Bore Size 2990B08D-D87D-4659-9217-F6477CBDD89D
 


hobby-man

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Thanks for info.

Unfortunately the Konigs dont come in 9" and I kind of wanted to go 9.5". With that being the case, I checked for a 30mm offset but thats not available either. I may need to look at another set of wheels if thats the case. I like how far the stocks are with the 20mm spacers so I'm trying to stick with that look. It sounds like I'll need to find a wheel that has a 30mm offset if I want to stick with 9.5" width, correct?
No, other way. If you want a 9.5 wheel you need a 45 or 50 offset.

Why do you want a 9.5 so badly? With that wide a wheel you wanna run 245 tires at minimum, 255 is ideal. Unless you're looking for a ton of stretch and exposed lip on the wheels.

If you dont want your speedo messed up too badly (within 3% error) you'd need to go 255/35R18 or 255/40R18 tires. Can't comment on if you'll have fitment issues.

Honda Civic 10th gen 2020 Si Bore Size Screenshot_20211015-192425_Chrome
 
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simon_lefisch

simon_lefisch

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No, other way. If you want a 9.5 wheel you need a 45 or 50 offset.

Why do you want a 9.5 so badly? With that wide a wheel you wanna run 245 tires at minimum, 255 is ideal. Unless you're looking for a ton of stretch and exposed lip on the wheels.

If you dont want your speedo messed up too badly (within 3% error) you'd need to go 255/35R18 or 255/40R18 tires. Can't comment on if you'll have fitment issues.

Screenshot_20211015-192425_Chrome.jpg
My bad, you’re right….45 offset. I was planning on going with a 255 tire anyway. Doesn’t look like the Konigs have a 45 so I time to start looking at something else….maybe the PF01’s. Gotta look around more. Thanks for the help tho, and that site is awesome btw! ?????
 


 


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