Official Wheel and Tire Fitment Thread

[GR3GR1LLA]

Those are not the wheel BTW. These are the wheel I'm looking to run.

 

[The Champ]

I'm not going to be able to be of any help to you. I don't understand what you're trying to accomplish.

The tire size is too small for the car and too small for the rim you've selected. It's not safe and won't handle very well.

If you like that look - and aren't worried about your ride or handling - do what you want to do.

 

[Wub2Dub]

Stance kids. *face palm*


Sent from my iPad using Tapatalk

 

[Wub2Dub]

2012 Chevy Sonic LTZ (hatch)
MPFab CAI, Forge BOV, 2.5" SS turbo back, Trifecta Elite Tuned, bypass valve "bypass", MPFab FMIC, Ultra Gauge, ported intake mani

 

[Howanitz]

So I loosely checked to see if anyone has done anything like this, but didn't come up with anything. Im looking into a set of wheels that are 17x8 et 35, but they're not the correct bolt pattern. I was just going to throw the money at a set of adapters to get them to work on the sonic. My question is this: the adapters are another 20mm added to the wheel, will that cause problem when it comes to mounting? Effectively it would be close to 17x9, I honestly don't know if anyone has done something that wide. Any help anyone can give is greatly appreciated, thank!

 

[GR3GR1LLA]

2012 Chevy Sonic LTZ (hatch)
MPFab CAI, Forge BOV, 2.5" SS turbo back, Trifecta Elite Tuned, bypass valve "bypass", MPFab FMIC, Ultra Gauge, ported intake mani

This has nothing to do with stance, people have stretched tires for years now with no bad results. Now with that being said the more extreme the stretch the more risk you're putting you're self in. But I see stock cars everyday with very mild stretch from the factory. Lexus for example. I'm not going for a "super sick hellaflush dope illest stance" with ridiculous camber \m/. I want a mild slight stretch to prevent rub when the car is lowered. I know I could us the correct size tire and tuck the wheel inside the wheel well but it's a car and nothing is ever good enough.

 

[GR3GR1LLA]

You're meme was quite though.

 

[GR3GR1LLA]

So I loosely checked to see if anyone has done anything like this, but didn't come up with anything. Im looking into a set of wheels that are 17x8 et 35, but they're not the correct bolt pattern. I was just going to throw the money at a set of adapters to get them to work on the sonic. My question is this: the adapters are another 20mm added to the wheel, will that cause problem when it comes to mounting? Effectively it would be close to 17x9, I honestly don't know if anyone has done something that wide. Any help anyone can give is greatly appreciated, thank!

I've seen a few guys on here running wheels that wide, some even wider (not by much though). A 20mm adapter sounds pretty big to me. I'm basing this off the fact that most guys are running 5mm or slightly bigger spacers. The only issues I can see is you having is you might have some poke? I'm currently on the hunt for the right wheel and adapter set up myself. The 5x105 bolt pattern sucks lol.

 

[The Champ]

This has nothing to do with stance, people have stretched tires for years now with no bad results.

How do you know there have been no "bad" results?

The tire manufacturers have rim size recommendations for their tires. Per the tire manufacturers - a 205/40/16 can not be safely mounted on an 8" wide rim.

Any tire shop that would mount that tire on an 8" rim is taking on more risk than they may understand. Because when you have a problem as a result - you (or the person you injure) is going to sue them.

You say it's not about "stance" - but you plan to use a tire that is 2.5" shorter, sticking with the same narrow tire width and looking at wheels/spacers to make them stick out more.

That's nothing but stance. There is no other reason for doing it.

I went with wider tires that fill the wheel well better than the OE tires. I could lower my car 2" and not have any rub issues if I wanted to (I choose not to because I live in snow country). My car has much better grip with the Goodyear Eagle Sports than you will ever get with your wheel/tire combo.

For me, it's about how my car corners. I enjoy a windy twisty road at speed.

For my summer cars, I have them lowered for better cornering and have much wider than stock tires.





I like my cars to look good and perform.

 

[bluejay]

im new and not sure if this has been asked b4 but can i run a 205,65,r15 winter tire mounted on 15x6 steelies on a sonic rs

 

[The Champ]

bluejay

That will mount up just fine. The tire will be .5" taller than stock.

The tire is designed to work safely on rims 5.5 - 7.5" wide.

 

[AdorableKaren]

My question is this: the adapters are another 20mm added to the wheel, will that cause problem when it comes to mounting? Effectively it would be close to 17x9, I honestly don't know if anyone has done something that wide. Any help anyone can give is greatly appreciated, thank!

I'm running 17x8 et 35 with 19mm adapters. I have a little poke because I chose bigger tires. If you stick with stock size tires you should be fine. AndrewGS is running big wheels and adapters as well.

17"x8.5" wearing 225/45ZR17 with 20mm thick adapters.

I swapped out my 20mm thick adapters for 25mm front and 28mm rear. I think it's perfect.

 

[bluejay]

thanks Champ.

 

[jledford]

I am considering new wheels and tires. I really like what D'Wolf and MPFab did and I think I may go down that road except with 8.5" rims instead. So with 8.5" rims et 35 or 42 and 235-40 R18 I get the following info (compared to OEM)....

Custom rims, wheel tire packages for your ride - RIMSnTIRES.com

et 35:
Package 2 is 16 mm (0.6'') closer to suspension/brakes components. Make sure that you have enough room for that. If not, consider lower offset, narrower tires or using spacers.

Fenders clearance:
Package 2 will stick out 24 mm (0.9'') farther. Make sure that you have enough room under the fender. If not, consider narrower tires or higher offset.

Wheelwells clearance:
Will fill out the wheelwell by extra 5 mm. Acceptable for most cars.

et 42:

Suspension clearance:
Package 2 is 23 mm (0.9'') closer to suspension/brakes components. Make sure that you have enough room for that. If not, consider lower offset, narrower tires or using spacers.

Fenders clearance:
Package 2 will stick out 17 mm (0.7'') farther. Make sure that you have enough room under the fender. If not, consider narrower tires or higher offset.

Wheelwells clearance:
Will fill out the wheelwell by extra 5 mm. Acceptable for most cars.

Will either of these set-ups clear an all oem set up besides eibach's Front 1.2"drop - Rear 1.4" drop?

NO!

A 235 tire is way more than you need, try a 225. A 225/40 will juuuuust clear the struts on a 8.5" wheel with a 35mm offset. The 42mm offset, forget it with 8.5" wheels.

I'm running 17"x8.5" on 225/45 with an effective offset of 36mm. It rubs the strut ever so gently.

Ok, I've read through this entire thread. Looking at getting 18x8.5 wheels for my LTZ Hatch. Lowest I'll ever go is Eibach springs because I drive it everyday for work.

The post above with 18x8.5 ET35 with 235/40R18 tires is exactly what I'm looking at doing at this point. I'm curious why this would not work and rub the strut?



Looking at this thread: http://www.sonicownersforum.com/forum/wheel-tire-discussion/8520-sooo-much-beef.html

MPFab was able to fit 18x9 with an ~30ET with 255/35 tires on the front of his car when it still had Eibach springs. He even mention in a post lower in that same thread that if he stuck with Eibach he wouldn't have had to roll/pull the fenders.

If I did my math right the 18x9 +30 has about 5.68" of wheel behind the mounting face. An 18x8.5 +35 has about 5.63" of wheel behind the mounting face. So the 18x8.5 +35 is about 0.05" farther away from the strut. Not much but should still fit since the other wheel did. Also the 18x9 +30 has 3.32" of wheel in front of the mounting face while the 18x8.5 + 35 has 2.87" in front of the mounting face. This is 0.45" less "poke" on the 8.5 vs MPfab's 9.0 wheels so there should be no fender rolling necessary.

This almost makes it seem like an 18x8.5 +30 would be right in the sweet spot, 5.43" of wheel inside the face, 3.07" wheel in front of the mounting face. Unfortunately the wheels I'm looking at don't have that option.

Also according to the link everyone is using here: https://jrowny.com/page/offset-calculator/

If you put in 255 on an 18x9 and 235 on an 18x8.5, then the 255 are actually a touch wider than the wheel while the 235 is actually slightly stretched on the wheel. You would assume this means even a bit more strut clearance to the tire (for deflection in cornering, etc).

To me, and the math I did (and the posts from MBFab), it sure seems like a 235/40 on an 18x8.5 +35 should work with a stock car, or car on Eibach springs, with no issues at all. Someone tell me why it wouldn't work?

 

[AndrewGS]

Ok, I've read through this entire thread. Looking at getting 18x8.5 wheels for my LTZ Hatch. Lowest I'll ever go is Eibach springs because I drive it everyday for work.

The post above with 18x8.5 ET35 with 235/40R18 tires is exactly what I'm looking at doing at this point. I'm curious why this would not work and rub the strut?



Looking at this thread: http://www.sonicownersforum.com/forum/wheel-tire-discussion/8520-sooo-much-beef.html

MPFab was able to fit 18x9 with an ~30ET with 255/35 tires on the front of his car when it still had Eibach springs. He even mention in a post lower in that same thread that if he stuck with Eibach he wouldn't have had to roll/pull the fenders.

If I did my math right the 18x9 +30 has about 5.68" of wheel behind the mounting face. An 18x8.5 +35 has about 5.63" of wheel behind the mounting face. So the 18x8.5 +35 is about 0.05" farther away from the strut. Not much but should still fit since the other wheel did. Also the 18x9 +30 has 3.32" of wheel in front of the mounting face while the 18x8.5 + 35 has 2.87" in front of the mounting face. This is 0.45" less "poke" on the 8.5 vs MPfab's 9.0 wheels so there should be no fender rolling necessary.

This almost makes it seem like an 18x8.5 +30 would be right in the sweet spot, 5.43" of wheel inside the face, 3.07" wheel in front of the mounting face. Unfortunately the wheels I'm looking at don't have that option.

Also according to the link everyone is using here: https://jrowny.com/page/offset-calculator/

If you put in 255 on an 18x9 and 235 on an 18x8.5, then the 255 are actually a touch wider than the wheel while the 235 is actually slightly stretched on the wheel. You would assume this means even a bit more strut clearance to the tire (for deflection in cornering, etc).

To me, and the math I did (and the posts from MBFab), it sure seems like a 235/40 on an 18x8.5 +35 should work with a stock car, or car on Eibach springs, with no issues at all. Someone tell me why it wouldn't work?

On my '14 RS the +36mm 8.5" on 225s rubbed ever so slightly. I don't know if it's the tire design where the rim guard rubs the strut on a slight stretch or what, I'm just telling you what I observed in my experience.

I'm now running an offset of +31mm up front and I think it's damn near perfect for my wheel and tire setup.


Tapatalking on my iPhone 6.

 

[TheGreenDragon]

The post above with 18x8.5 ET35 with 235/40R18 tires is exactly what I'm looking at doing at this point. I'm curious why this would not work and rub the strut?

MPFab was able to fit 18x9 with an ~30ET with 255/35 tires on the front of his car when it still had Eibach springs.

There's your problem. You forgot to take the sidewall profile into consideration. Chances are, the stretch on MPFab's tires are much more severe because he has both a wider rim AND a smaller sidewall.

Personally I use this tool for my tinkering. Hope that helps.
Rim & Tire Size Calculator. Custom Offsets - Wheel-Size.com

 

[jledford]

There's your problem. You forgot to take the sidewall profile into consideration. Chances are, the stretch on MPFab's tires are much more severe because he has both a wider rim AND a smaller sidewall.

Personally I use this tool for my tinkering. Hope that helps.
Rim & Tire Size Calculator. Custom Offsets - Wheel-Size.com

While I agree the sidewall is a bit taller on a 235/40 vs 255/35, about 0.18", according to all the calculators I can find the 235 would be stretched on an 8.5" wheel, the 255 is actually square or just a bit poked on a 9" wheel (MPFab fronts, I realize the 9.5" rears would be stretched a bit). I've run 255 tires on a 9" wheel before and they were perfectly square, no stretch.

Perhaps the taller height would hit the spring perch on the strut, but I don't believe the inside of the tire at the seating area would rub the strut.

 

[jledford]

On my '14 RS the +36mm 8.5" on 225s rubbed ever so slightly. I don't know if it's the tire design where the rim guard rubs the strut on a slight stretch or what, I'm just telling you what I observed in my experience.

I'm now running an offset of +31mm up front and I think it's damn near perfect for my wheel and tire setup.


Tapatalking on my iPhone 6.

Cool, thanks!

 

[lousypirate]

Can they stretch a 15" tire to fit on a 17" wheel?

I'm just quoting this because I don't think anyone caught it.

 

[ak215371]

A 15" tire on a 17" wheel. I highly doubt that could happen, they can stretch a 17" tire meant for a 17x7.5 inch wheel to a wider wheel that's 17" inch. Now I could be wrong. But even if they could stretch that, I wouldn't do it seems really sketchy.