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***List of Wheel Sizes, Offsets, and Tire Sizes for RSX.

1M views 2K replies 604 participants last post by  mfarmakas17 
#1 · (Edited by Moderator)
PLEASE DO NOT PM ME ASKING WHAT WILL FIT. I ONLY KNOW THE INFO ON WHAT IS POSTED BELOW.

RSX Wheel Offsets and Tire Sizes.

All sizes and offsets listed below are known to work and have been used by a member here. Another tire size or offset may work than those listed, if you have used or are using an offset and tire size that is not listed below, post a reply to the thread and I will try to add it. Please be sure you know the offset works before posting and pictures always help too.

Shown below is a list of wheel sizes, offsets, and tire sizes known to work with them. All of the information below is based on RSXs without widebody kits and unrolled fenders. This way everyone will have an idea of what works on a stock body, lowered RSX. Also, these sizes are without the use of wheel spacers.

I hope this helps everyone...

Updated 04/07/07


-Stock Offset and Sizes-
'02-'04: 16x6.5" with +45mm offset.
'05-'06: 17x7" with +45mm offset.

-Bolt Pattern and Lug Nut Size-

These also apply to aftermarket wheels:
Bolt pattern: 5X114.3 (means 5 lugs spaced 114.3mm apart)
Lug nut size: 12mm X 1.5" (12mm thread size by 1.5 inches long)

-OEM or Stock Body and Fenders ]-(no alterations to the body of the car to make them fit)

16X7: +40. Tire sizes: 205/55-16 to 225-50-16.
16X7.5: +43. Tire Sizes: 225/50-16.
16X8:
16X8.5:
16X9:
17X7: +35 to +60 Tire sizes: 205/45-17 to 225-45-17. (ideal offset is +42 or +43)
17X7.5: +40 to +48 (+35 w/ no drop). Tire sizes: 205/45-17 to 225/45-17. (ideal offset is +42 or +43)
17X8: +35 to +48. Tire sizes: 215/45-17 to 245/45-17. (245/40-17 was used with +40)
17X8.5: +30 offset with 215/45-17 Tire. +40 with a 235/45-17 Tire.
17X9:
18X7: +37 to +45. Tire Sizes: 205/40-18 to 225/40-18. (ideal offset is +42 or +43)
18X7.5: +38 to +48. Tire sizes: 205/40-18 to 225/40-18. (ideal offset is +42 or +43)
18X8: +37 to +48. Tire Sizes: 225/40-18.
18X8.5: +45. Tire sizes: 235/40-18.
18X9: +40. Tire size: 245/40-18 ALSO>> 18x9 +29 offset, 215/45/18 tire
19X7: +40 to +45. Tire sizes: 215/35-19 to 225/35-19.
19X7.5: +43 to +48. Tire Sizes: 215/35-19 to 225/35-19.
19X8: +35 to +47. Tire sizes: 215/35-19 to 235/35-19.
19X8.5:
19X9:
20X7:
20X7.5: +42. Tire Sizes: 225/30-20. NOT LOWERED! Only on '05 and up???
20X8:
20X8.5: +42. Tire Sizes: 225/30-20. NOT LOWERED! Only on '05 and up???
20X9:


-Offsets, Hub-Centric Rings, and Counterbores-





Basically offset is the distance from the centre of the wheel to the part of the wheel that sits against the hub of the car (mounting pad), more commonly measured in millimetres (mm).

As you can see in the diagram above, a positive offset is when the mounting pad of the wheel is toward the outer edges of the car and a negative offset is when the mounting pad is towards the centre of the car more. An offset of zero is the absolute centre of the wheel and would have an equal distance to each side of the mounting pad. For the RSX all of the offsets should be positive (+) I don't see where you would want or need to use a negative offset at all. The offset will change on wheel width too, you won't have the same offset on a 9" and a 7" wide wheel and have them fit the same on the same car.

When you buy aftermarket wheels the centre bore of the new wheel will be much larger than that of the stock wheel, this is because of the wide range of hub sizes on different cars and not all cars are made the same. So what the wheel manufacturer will do is make the hub size the largest so it will fit over any hub and then a hub-centric ring must be used to make up the difference between the RSX's stock hub size and the aftermarket rim center bore size. These are usually made of plastic or aluminium and should come with your new wheels to prevent any vibration that may occur. Without them, your wheel will not be truly centred on the hub and at certain speeds, your steering wheel may shutter and/or vibrate, just like an unbalanced tire - not a good feeling.
 
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#1,222 · (Edited)
I'm looking for advice on a couple of different offset options I've got available to me. I'm ordering new wheels this week and I'm not sure what the best option would be. Which of these offsets would be the best fit on a 17x9 wheel. The options I have are +22 and +30. I'm lowered on Ksport Coilovers w/ 224/45/17. I'm rolling my fenders before I get the tires mounted.

*edit*. Meh. I'm going with the 17x9 +30 MB Battles. Can't beat the price.
 
#1,226 ·
You guys are fucking scientists!

I don't mean you're having sex with scientists, I mean that even CERN could not have calc'd a way to stick more rubber under my 02 Type S.

Thanks to this thread, I went with 245/40's on TL 17 x 8 rims with a mild drop. They don't rub a bit, look severely badass and stick even better.

THANK YOU!
 
#1,231 ·
Yes you can.. And when you bring it to get an alignment tell them
How you want it to sit. You should get your fender roll so you can run more positive camber. I usually try to get the positive as possible..The 235 or 245 is what you prefer.. Meaty or a little I mean slight stretch. Mehhhh more of a personal preference... Picture of car would be good To give us a idea

could i have gone wider like a 235/45 or 235/40?
Yes you can mister.


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#1,238 ·
I was wondering if anyones tried 235/45/17 Tires on a 17x8 +42 wheel on the rsx. Im afraid the 235's will hit the rear trailing arm at this offset.
Right now the Wheels have 225/45/17 tires on and everythings fine, but i want to run wider tires

Thanks for any info

My alignment specs if it matters:
0 toe all around
-1.4 camber front
-0.5 camber rear
Dropped on A-spec suspension
 
#1,243 · (Edited)
Someone PLEASE HELP ME

IM ordering my first coilover set (racelands; dont judge me) tomorrow and i have an 02 base with stock 02 rims. i dont want any rubbing anywhere and i would like to kep the fender lining. can someone please tell me what wheel spacers i should buy for the rear and front ? and this is without the fenders rolled thank you.
 
#1,244 ·
IM ordering my first coilover set (racelands; dont judge me) tomorrow and i have an 02 base with stock 02 rims. i dont want any rubbing anywhere and i would like to kep the fender lining. can someone please tell me what wheel spacers i should buy for the rear and front ? and this is without the fenders rolled thank you.
I don't think you would need any unless you get wider wheels like a 17x9 and up
 
#1,247 ·
Wow, I have never even posted on here...

Been a member since 2006. My '02 RSX got run into a concrete wall in 2007 and I bought an '05 base a year ago, so I guess that explains my absence.

Anyways, I have some noob questions (I won't learn unless I ask).

Car is an '05 RSX base autobox. It is absolutely stock. I don't know a lot about changing wheel sizes. i have come across a set of Enkei EV5's that I like the look. They are 18x7.5 with the correct bolt pattern (tires will be purchased separately, but I was thinking wide, 225/40-18).

My main question is, what other things would I need to change?
I understand what an offset is (distance from hub mount to the centerline of the wheel), but according to the chart on pg 1, I have a +45 and need to go to +43 offset. How do I do that? Is that buy changing the bolts or using some sort of spacer? If it is a spacer, is there a 45mm one on the stockies that can be removed? I can easily grind and lap 2mm off of it, I have the capability and tools (I am a metrologist, I can lap stuff down and keep it flat and parallel to 0.000015"). If it is just a ~$20 part issue though, I'd just buy it.
And finally, moving from the stock 17's to 18's, will that give me the offroad look? I would much rather keep it the same ride height as it is currently, so I would like to know if I would need to get into suspension lowering.

I would like to thank everyone who reads that long post in advance.
 
#1,251 ·
And I guess you still haven't posted according to your post count! I guess this thread doesn't count :p

Regarding the EV5's, I would advise going with the 17" wheels if you want to improve the performance of your car. The 18" wheels weigh 21.8lbs and the 17" ones weigh 18.6lbs, but they are only 7" wide (same as stock). Speaking of which, the stock 17x7" 05-06 rims weigh 20.7lbs. So the lighter they are, the more responsive they are to acceleration and braking (less rotational inertia), as well as allows your suspension to react/behave a little faster. But if looks are your thing, then the 18-inchers are probably going to feel close to stock, so you won't really notice :]. But for reference, the 02-04 16x6" wheels are only 16lbs.

Also regarding not noticing the difference, 18" wheels will not make your car have more of a 4x4 look, unless you increase the diameter/circumference of the tire (that is not math -- just either/or), raising the center of the wheel higher off the ground, which is attached to your axles & suspension. So to get the same diameter you have to get a low profile tire (shorter sidewall), i.e. going from a /45 tire to a /40. This is pretty much my go-to source to compare: http://www.miata.net/garage/tirecalc.html. Or, when looking at a tire brochure, look at the Revolutions Per Mile and make sure they are about the same. More Revs means it is smaller. Going larger can decrease performance but can gain you some mpgs on the highway. Some people go with 235/45R17s for example, but I'd rather just go wider with a 245/40R17. Note: not all tire widths fit on any rim width, so be sure you meet the minimum if you beyond a 225 wide tire.

As for your offset, +43 is actually a greater offset than +45, in terms of making the wheel stick out, so you'd want a 2mm spacer, in your instance, not grind away less :]. I think 5mm is the smallest spacer, but you can just get +40 offset rims to begin with. But, with only 7.5" wide rims, you don't need spacers at all with a +45 offset. That +43 was just some geometric ideal offset.

Just make sure you pick something you've seen someone do before. Capisce?
 
#1,256 ·
Stock is 45 and your is 48.. Really isn't a big different buddy sorry to say. Go with the 20 if you don't want to remove your stock stud. 25 would be pass normal flush. 25-48 = +23 so aim for 20-48 to be = +28 less headache. Pretty sure you have a camber kit. And atleast post a picture of your car. We really dont know what tire size and stuff. Because certain tire would cause you to rub at that offset. Which mean you just need to roll the rear fender. No biggie...


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#1,259 ·
^
No, that's not how it works. Offset is relative to the wheel width. A 7.5 +48 sticks out more than a 6.5 +45 despite having a higher offset.
I don't know how to explain offset, but a 0 offset means both sides of the wheel from the center are equal length, if that helps you understand.
Google it
 
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