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Lowered GR86, what tire sizes are safe?

skiminski

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Aug 10, 2025
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I helped my brother install Eibach springs on his 2023 Toyota GR86. He's still on stock 18s but wants to go wider. We're trying to figure out what tire size works without rubbing or needing spacers. He's looking at 18x8.5 +35 with 235/40 or maybe 245/35. Anyone running those sizes with Eibach springs and no issues on full lock or dips?
 
I helped my brother install Eibach springs on his 2023 Toyota GR86. He's still on stock 18s but wants to go wider. We're trying to figure out what tire size works without rubbing or needing spacers. He's looking at 18x8.5 +35 with 235/40 or maybe 245/35. Anyone running those sizes with Eibach springs and no issues on full lock or dips?
With Eibach springs on a 2023 GR86, running 18x8.5 +35 wheels with 235/40 tires usually fits well without rubbing, even on full lock or dips. The 245/35 tires are a bit wider and lower profile, so they might be tighter but still possible depending on your setup. Lots of folks run similar sizes without needing spacers, but its always good to test fit if you can
 
Absolutely, going with a 235/40 is definitely the safer option, and a lot of folks have had success with that combination. A 245/35 can work well too, but it's best to test fit it first if you can, since every car has its own little quirks.
 
We're leaning toward 235/40 for now since it's been mentioned a few times as the safer route. Still curious if anyone's actually dailying 245/35 on 18x8.5 +35 with Eibach springs and no rubbing at full lock or dips. If you've run that combo without issues, would be helpful to know what alignment specs or camber settings you used. Planning to order wheels in the next week or 2 so trying to lock this down soon.
 
We're leaning toward 235/40 for now since it's been mentioned a few times as the safer route. Still curious if anyone's actually dailying 245/35 on 18x8.5 +35 with Eibach springs and no rubbing at full lock or dips. If you've run that combo without issues, would be helpful to know what alignment specs or camber settings you used. Planning to order wheels in the next week or 2 so trying to lock this down soon.
Yeah i think going with 235/40 sounds like the safer bet if you want to avoid rubbing issues . Running 245/35 on 18x8.5 +35 with Eibach springs can work, but it really depends on your camber, alignment and how aggressive your suspension setup is
 
The agreement is that 235/40 is the straightforward, no-fuss option, while 245/35 requires more attention to detail. After discussing the input with my brother, he has decided to go with the 235/40 tires to be safe. Since this is his daily driver, he doesn't want to deal with potential rubbing issues.
 
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