can i fit 225/55/R17 tires on my vehicle that normally has 225/45/R17 (rim swap)?
Posted by Zedandbreakfast@reddit | askcarguys | View on Reddit | 17 comments
partsguy64@reddit
Tire sizes are given in millimeters. The first number (225) is the tread width. The 2nd number is the aspect ratio. 55 is the percentage of the side wall height to the tread width. 55% of 225 is about 185 so the side wall is 185 millimeters tall. 45 is 175 millimeters. The last number is the diameter of the rim size the tire fits. This is the only part that cannot be changed if using the original rims. Everything else depends on fender and suspension clearance, ride height and overall look.
Sideburn_Cookie_Man@reddit
Why?
That's a larger diameter in total.
TrvthReloaded@reddit
Better ride quality?
Sideburn_Cookie_Man@reddit
Yep, but lower torque, higher fuel economy, increased body roll etc
TheWhogg@reddit
There will not be higher fuel usage LOL.
Sideburn_Cookie_Man@reddit
You don't understand physics?
For a start, the rolling resistance is higher - so it takes more energy to get rolling.
And the total wheel diameter is increasing, so yes - the economy will go down.
TheWhogg@reddit
It’s not too late to delete this. 🤡
Sideburn_Cookie_Man@reddit
I can't read your other comment as it's gone, but you're objectively wrong.
Increase the rolling diameter of the wheel on a vehicle absolutely increases fuel usage. It's simple physics.
Also, I'm speaking from personal experience as well 😄
Sideburn_Cookie_Man@reddit
You really aren't aware of how physics work?
Does a larger diameter wheel somehow have lower rolling resistance in your mind?
Because that's the opposite of reality.
Feel free to prove me wrong? I'll wait.
TrvthReloaded@reddit
Lift + regear… If a 55 ratio is bad body roll to you then you’d hate my 75’s.
Zedandbreakfast@reddit (OP)
Winter tires , my guy.
Was looking for winter rims but couldn’t find any but found newer winter tires with those specs. Was wondering if that difference was too much
TrvthReloaded@reddit
Yeah that’s probably too much unless you want to lift and regear your vehicle. You could probably go a little wider or thinner like a 215 or 235 or maybe 225/50 without having to lift or regear but that depends on your car
1995LexusLS400@reddit
Maybe, maybe not. Depends on your car specifically.
If you can, it’s going to cause your speedometer to massively under read. But chances are you can’t.
MetaphysicalEngineer@reddit
That's a significant diameter increase. Risk of rubbing or contact with suspension or wheel well. If you mention what vehicle, that might help someone with firsthand experience chime in.
Zedandbreakfast@reddit (OP)
2024 Hyundai Elantra preferred
MetaphysicalEngineer@reddit
If you can drop to a 16" wheel, that will let you run a 225/55/16 tire with only a slight size increase. Or something like a 215/55/16 with even closer diameter match, though slightly narrower tread width.
This will depend on clearance from the brake caliper, another item you'd need to check!
Nervous_Hurry_9920@reddit
As someone who has a modified car, with larger wheels, and kept the same dimension tire. It depends.
I'd check out your car on fitment industries gallery and see what other people are running.
I have all sorts of rubbing over bumps.. I'm ok with this. Most people are not