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Old 02-26-2019, 10:45 PM   #1
89_740Turbo
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Default Questions about putting different bolt pattern wheels on 740 because im dumb

I'm dumb when it comes to wheels. I always play it safe and force myself to be 'satisfied' with the elusive 5x108 bolt pattern wheel.

Well its a new year and I'm gunna stop being a puss when it comes to wanting to put new wheels on.

I found a pretty cool set online. I like them a lot. Id like to buy them eventually.

Details of them are as follows: 17" x 7.5", +38 Offset, 5x114.3 Bolt Pattern, 73.1mm Hub

I know I will need 5x108 to 5x114 adapters BUT what I don't know is, is there a thickness of the adapters I need. Is the hub diameter too large or small. I don't know anything about wheels!
Thanks in advance
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Old 02-26-2019, 10:53 PM   #2
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I, and many others, have used 25mm spacers in front, or all the way around, and 32mm in the rear. Works great! I don't remember the hub diameter, I didn't use hub centric spacers, which means you need to be very careful putting them on, hand tighten every other lug nut until you can't anymore, then use the sockets.
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Old 02-26-2019, 10:58 PM   #3
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Originally Posted by 2turbotoys View Post
I, and many others, have used 25mm spacers in front, or all the way around, and 32mm in the rear. Works great! I don't remember the hub diameter, I didn't use hub centric spacers, which means you need to be very careful putting them on, hand tighten every other lug nut until you can't anymore, then use the sockets.
Basically meaning the wheel itself isn't sitting on the hub at all and only being fitted to the car by the lug nuts? Oooof
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Old 02-26-2019, 11:03 PM   #4
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Yup, it withstands a lot of punishment, not V8 torque probably but anything the normal B230FT puts out, and the adapters are cheap. I did a ton of nasty burnouts on them with no problems. That tiny little lip is only really centering the thing anyway. I understand if your not comfortable with it, gotta be very confident in your install and its fine.
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Old 02-26-2019, 11:07 PM   #5
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My spare set of 25/32 mm adapters, got them on Amazon I think

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Old 02-26-2019, 11:10 PM   #6
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Originally Posted by 2turbotoys View Post
My spare set of 25/32 mm adapters, got them on Amazon I think

Awesome, thanks for the info. One more question: Do they sell hub centric adapters or do they not exist. I'm about to google now but figured id ask anyway
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Old 02-26-2019, 11:17 PM   #7
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H&R sells hubcentric in 5x108 to 5x108, in 25 mm only. I don't know if they have other bolt patterns, I have only done the 5x108 route. Expect to pay at a good bit more for hubcentric, I believe the last set of 32mm spacers (left above pic) was just over $100 for 4 spacers, I thought I was getting 2 and was surprised when 4 showed up.
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Old 02-26-2019, 11:51 PM   #8
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Quote:
Originally Posted by 2turbotoys View Post
H&R sells hubcentric in 5x108 to 5x108, in 25 mm only. I don't know if they have other bolt patterns, I have only done the 5x108 route. Expect to pay at a good bit more for hubcentric, I believe the last set of 32mm spacers (left above pic) was just over $100 for 4 spacers, I thought I was getting 2 and was surprised when 4 showed up.
So the center bore on the wheels is 73.1 but the bore of a 740 hub is 65.1 and I just found these - https://www.ebay.com/itm/4-Aluminum-...S!-1:rk:7:pf:0 - so I'm going to go out on a lim here and say this is what I would need to use with a 5x108 to 5x114 adapter?
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Old 02-27-2019, 12:00 AM   #9
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Old 02-27-2019, 12:20 AM   #10
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Quote:
Originally Posted by thelostartof View Post

Ooooo thanks for the link!

If I were to order custom ones, what should the stud size be. I'm thinking 12-1.5

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Old 02-27-2019, 08:12 AM   #11
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Old 02-27-2019, 05:24 PM   #12
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here are some companies that make wheels you won't need adapters for. Browse them a bit.
https://www.hrewheels.com/?gclid=EAI...SAAEgJbLPD_BwE
https://www.comp.co.uk
https://www.rimstock.com

Not cheap but they make very nice wheels. Your stock offset is 25mm on the 740T.
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Old 02-27-2019, 09:56 PM   #13
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So I found some wheels that I really really like - https://www.performanceplustire.com/...ure-3/ws:16x8/

I now stock 740 offset is +25mm. With these wheels being +20mm offset as well and having a 8" width, what width adapters would I use to have these flush or still under the fender

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Old 02-27-2019, 10:05 PM   #14
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Doing it right and spending now to save later both mean "don't use spacers or adapters, get the proper wheels that fit", they won't pass inspection in many states when they are over 5mm, for a couple reasons, a large one is you can't tell if the spacer is coming loose until its very loose and you get vibrations, hub centric doesn't help with that problem. But ya the more expensive hub centric ones is the lesser risk, especially if you don't want to take the time to properly center the cheaper ones.

Spacer thickness answer is still the same for a 9" rim and 25mm will be fine
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Old 02-27-2019, 10:26 PM   #15
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https://www.rimsntires.com/specspro.jsp

This should give you an idea on tire sizes and offset.
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Old 02-27-2019, 11:06 PM   #16
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Quote:
Originally Posted by 2turbotoys View Post
Doing it right and spending now to save later both mean "don't use spacers or adapters, get the proper wheels that fit", they won't pass inspection in many states when they are over 5mm, for a couple reasons, a large one is you can't tell if the spacer is coming loose until its very loose and you get vibrations, hub centric doesn't help with that problem. But ya the more expensive hub centric ones is the lesser risk, especially if you don't want to take the time to properly center the cheaper ones.

Spacer thickness answer is still the same for a 9" rim and 25mm will be fine
NJ doesnt require inspection for cars older than 20 years so I luckily dont have to worry about that. 25mil spacers all around with a 9" wheel, math wise when I did it, make it seem like it would be protruding way out of the wheel well lol that's the only reason I ask
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Old 02-28-2019, 06:19 PM   #17
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Quote:
Originally Posted by 89_740Turbo View Post
NJ doesnt require inspection for cars older than 20 years so I luckily dont have to worry about that. 25mil spacers all around with a 9" wheel, math wise when I did it, make it seem like it would be protruding way out of the wheel well lol that's the only reason I ask
if your planning on Mucho HP trust me, adapters are a no no. Better off drill and fill some ARE 398s, thats what I did and it ended up costing the same as adapters.

I have a set of barrels you can have for $200 bucks if interested.
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Old 03-01-2019, 04:16 PM   #18
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Originally Posted by Ilvmetal View Post
if your planning on Mucho HP trust me, adapters are a no no. Better off drill and fill some ARE 398s, thats what I did and it ended up costing the same as adapters.

I have a set of barrels you can have for $200 bucks if interested.
That's probably what I am going to do - just bring wheels somewhere to get drilled. I've been researching and researching the hell out of different setups I could possibly use for my 740 but between the stock 25mil offset and the rest of the wheel offsets out there plus having to use spacers, I don't know if anything will work.
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Old 03-01-2019, 04:26 PM   #19
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16s aren't worth even buying anymore....there are hardly any decent tire choices in 16. Go 17s or 18s.
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Old 03-01-2019, 04:34 PM   #20
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Originally Posted by RvolvoR View Post
16s aren't worth even buying anymore....there are hardly any decent tire choices in 16. Go 17s or 18s.
I am running 17s at the moment. They came with the car so they aren't "me". If that makes sense.

Ultimately, what I am trying to figure out is what combinations can I go with that will work on a 740. See picture below



I need to figure out what wiggle room a 740 has. You see where the 2 red lines intersect, horizontally than vertically? I need to figure out what the distance is of the horizontal line so I can determine a few things.

1. What offset wheel is ideal

2. What size mm wheel adapters do I need to use

#2 will of course be determined by #1 since the adapters will push the wheels out a little more. I am seeking a wheel that has a lip - something like a BBS but doesn't have to be one.

I have been trying to figure out how I can fit these wheels onto the car.



17x8.5
Offset: 35 mm
Backspace: 6.125"

As well as trying to figure out if I could fit these, which I like more



17x8.5
Offset: 15 mm

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Old 03-01-2019, 05:51 PM   #21
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ok so take the wheels off, hang something heavy (plumb bob) from a string attached to the fender and use a measuring tape?
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Old 03-01-2019, 06:13 PM   #22
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Quote:
Originally Posted by RvolvoR View Post
16s aren't worth even buying anymore....there are hardly any decent tire choices in 16. Go 17s or 18s.
He's right.
Like magic...here is your actual car with those 16" in rims.
17s are good but 18" are seven sexier.



I'm running 18" R pegs on my current 740 and it's a perfect fit

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Old 03-01-2019, 09:14 PM   #23
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[QUOTE=Ilvmetal;5922509]He's right.
Like magic...here is your actual car with those 16" in rims.
17s are good but 18" are seven sexier.



Hey! That's where the cars rain and wind deflectors went! LOL

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Old 03-11-2019, 08:20 PM   #24
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Quote:
Originally Posted by 89_740Turbo View Post
Ooooo thanks for the link!

If I were to order custom ones, what should the stud size be. I'm thinking 12-1.5
What he said - motorsport-tech / Adaptec know their stuff, and this approach unlocks wheels that simply aren't available with the sort of offsets you'd otherwise have. Pick a vanilla PCD like 5x4.5, do the offset math to get you to et40-ish, and voila, you look like a Mustang.
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