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Index > Suspension > Thread: Factory wheel size offset and tires sizes
Thread: Factory wheel size offset and tires sizes
knight1976


Revvin Up
Posts: 58
posted January 24, 2003 08:48 AM

Factory wheel size offset and tires sizes

I recently bought my first repu(has 2 different pairs of rims on it) I have been playing with rx7s for a while but REPU is very new to me. So i am trying to find out what stock rims look like (anyone got pics?) what bolt pattern they have, what the stock wheel dimensions are and what offset they have. What were the stock tire sizes and what is the widest tire i can run on stock rims without rubbing. Thanks a ton guys ill post pics when i get em.


____________
1990 GXL (All stock except for rims)S5 Turboii/GTUs rims
1974 REPU FOR SALE

       
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Jeff20B


Moderator
Posts: 661
posted January 24, 2003 11:31 AM

I've got a set of alloy rims which have 205 50 R15s on 'em. These don't rub, but they're way too short. When my speedo says I'm doing 90 in a 55 and other cars are still passin' me, it's gotta be the tires. 4th gear on a 35MPH street isn't very cool either. I'm thinking of going to 60 series tires to help even it out.

Sorry, I don't know what the offset is.
____________
'74 REPU
'76 Cosmo
'77 MG Midget 13B
'81 RX-7

       
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knight1976


Revvin Up
Posts: 58
posted January 24, 2003 11:59 AM

And that is on a stock tranny and rear end? My 74 has stock tranny and rear end I just want to make sure the tires i put on it are the right size and i dont have the speedo issue you have now. So are your rims stock ? If not then your tire sizes help me a little but are not a great help:(. Let me know anyone have stock rim pics? Help me out!!
____________
1990 GXL (All stock except for rims)S5 Turboii/GTUs rims
1974 REPU FOR SALE

       
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Klaus43


Rotorhead
Posts: 1259
posted January 24, 2003 12:25 PM
Edited By: klaus42 on 24 Jan 2003 12:30

Which stock tranny?

4 speed, 5 speed, or auto... and how can you be sure it's not out of a Cosmo or rx-4...if it's a ribcase...(some had different gearing...) ? Sorry, still no digital camera...and I sold my stock rims to Neal w./ my blue '74...perhaps he can help you out w./ pix...? Stock steel rims 14x 5.5, I think... pretty standard looking offset...tho to go wider we need wheels offset to the inside more than most. Mitsubishi 15x7 pathfinder steels work well... with a 205 to 225/65 tire you should approximate the original height of the stock Bridgestone skyways. On a stock (or similar courier steel rim) you can run a 195, perhaps 205/14 70 series with no rubs--depending on the tire. Tires do vary within sizes by manufacturer and style!
I'm running a "standard" (too far to the outside) offset 15x7 steel rim with 205/60's on my un-lowered driver... with no great speedo/gear problems...but that truck has a '79 rx-7 5-speed in it...

       
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knight1976


Revvin Up
Posts: 58
posted January 24, 2003 12:51 PM

The tranny i have in it is a 4 speed. How do you like the rx7 5 speed in the repu? I was thinking about doing that to help out on the highway . Also the rear ends in repu were they all teh same? I have a 1974 and i was told it has the 4.60 in it is that correct? (im sure 4.60 isnt absolutly correct im sure its prolly 4.6xx or somwhere close to that).

Is there anyway i can get intouch with the guy you sold your rims to? Let me know.

ALso where are the REPU gurus??
____________
1990 GXL (All stock except for rims)S5 Turboii/GTUs rims
1974 REPU FOR SALE

       
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repujeff


Revvin Up
Posts: 71
posted January 24, 2003 03:09 PM

orig. wheels

Welcome aboard, I have the orig. wheels on, but I also have the orig. bias ply tires on em and you can view them at the following site. rx7wi.org click on members and look at the bottom of the page and you can find my REPU. Let me know if you need anything else about those wheels/tires.

       
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DPassmore


Hauling
Posts: 104
posted January 24, 2003 05:17 PM

Although I'm not going to unveil them yet I'll say that when I was looking for my wheels they recommended 5" rear spacing on the frt wheels.I'll show em' off in Febuary...
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nwaco


Redlining
Posts: 407
posted January 24, 2003 07:11 PM

Hey Jeff...

Nice Truck, You can keep the wheels, but I want the valance. LOL.....

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brad


Rotorhead
Posts: 1671
posted January 24, 2003 10:24 PM

I got Dunlop GT Qualifier 235/60/14 and they don't rub anything. Nice wide tire for grip and thick sidewalls for comfort but not tall mushy 70 series. Wheels are spoked steel rims I just stripped and repainted white.

74 and 75 have 4.62 rear. Jack up rear end. Turn driveshaft by hand. It should take 4.62 turns of driveshaft for rear wheels to make one revolution. You can check tranny gears same way. Input shaft revolutions vs output shaft.

I have a 79-80 Rx7 5 speed and that fifth gear really helps out on the freeway. Even then revs are a little high but hey, rotaries make their peak power up high and can take some revs. The 79-80 trans is the right length so driveshaft and shifter will slide right in there without cutting. You will need to make a little steel plate for the trans to mount to the crossmember, no biggie. Speedo gear is all wrong. I would like a REPU speedo gear to slide in there and be a close match but don't have one to try out!

____________
-brad-
74 REPU Lawn Green
81 Rx-7 racecar. 12a J-
Bridge

       
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Jeff20B


Moderator
Posts: 661
posted January 24, 2003 11:07 PM

'79-'80 tranny and '74 4.60 diff on my truck. The rims currently on it are stock B2000 chromes with 195 75 R14 front and some sort of 27 inchers in the rear. They're pretty much slicks now (tee hee), so when I get new tires, I'll jest get some 60 series on the 15 inch alloy rims.

My speedo with the 27 inch LT tires is about 5mph low. My speedo needle bounes below 30-35 though, so I'm ok doing 5 over the speed limit, usually. I think the diameter of 205 60 R15s is pretty close to what's on my B2000 rims, so I don't anticipate having to relearn my speedo with new tires. My sloppy steering will be a little harder to drive with wider front tires though.
____________
'74 REPU
'76 Cosmo
'77 MG Midget 13B
'81 RX-7

       
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rotormunky


Redlining
Orlando, Florida
Posts: 424
posted January 25, 2003 03:37 AM

Those wheels in the brochure . . .

All this talk about stock wheels has got me thinking about those wheels in the brochure. Heck they're even on the li'l blue truck up there in the left-hand corner of the forum page on the website.


Anyone got any decent pics or info on these?


____________
-Martin
Orlando, Florida

http://www.themonkeyhouse.org/REPU

'77 REPU (Some assembly required :)
'91 Cabrio (Battered and bruised, but she's still my baby.)

        Click here to visit rotormunky's homepage. 
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Klaus43


Rotorhead
Posts: 1259
posted January 25, 2003 12:12 PM
Edited By: klaus42 on 25 Jan 2003 12:15

I've seen aluminum wheels like that...

...but they weren't on a REPU--they were rx-4, and they were 13, maybe 14" at best... and not wide, either. I like my 1st-gen 5-speed fine for what it's worth...tho 1st gear is super low... If you can find yourself a ribcase, and the parts to go inside, then it'd be the most original way to 5-speed your REPU--even if what it came out of means a few gear ratios are a bit different perhaps than what came in the '76-'77 5-speed REPU's. Rearend ratios were all the really low ones, except for '77, when they went with a real tall rearend.
To get in touch with Neal, try emailing him at kansei@pathwaynet.com ...hope he won't be p.o.'d at me for posting that here...I think he's a member of this forum by now...

       
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DPassmore


Hauling
Posts: 104
posted February 19, 2003 06:19 PM

My new wheels are here.I went by what centerline recommended on the frt. a 5" rear spacing.Too much,don't go with anymore than 4".Although they will work (since my truck won't turn all the way)
I'll unveil them soon.The new "homebuilt" rear suspension is almost done.
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DPassmore


Hauling
Posts: 104
posted February 25, 2003 05:38 PM
Edited By: DPassmore on 25 Feb 2003 17:58

Just a little tease...

I can't show the rear yet,the suspension isn't done but here's the front.I'll put a bigger front tire on later.These are some I had lying around.I will say I'm planning on 255/60/15 on the rear.They clear the frame by 1.5".
I'm waiting on the rear shocks and then when the frame is painted I'll put the bed back on.She's gonna be LOW...
All in due time.



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Klaus43


Rotorhead
Posts: 1259
posted February 26, 2003 10:19 AM

Damn! She's looking sweet!

...But what's that 'growth' on her chin? Does it incorporate a larger intake front and center, or are you going for the 'stealth' disguised look...i.e., what kinda truck is THAT?

       
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DPassmore


Hauling
Posts: 104
posted February 26, 2003 02:58 PM

Hmmm so you noticed....

That's the reason why I'm the only one on this board NOT looking for a frt valance!It's a modified Honda Accord bumper cover.If only my fenders weren't cut by that idiot that had it before me.A hood and fenders would be nice...
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Klaus43


Rotorhead
Posts: 1259
posted February 27, 2003 07:41 AM
Edited By: klaus42 on 27 Feb 2003 07:43

Sorry, nothing personal, but i hate Hondas!

Why on earth would anyone have cut the front bottoms off the fenders? Removing damage? Clearance? Yeah, right! So I take it the snorkel on top was not your first choice, either? If it's functional, at least, it's not 100% bad...
Do bear in mind since rotaries reject one-third of their heat thru the oil, having excellent airflow thru the oil cooler is a must...

       
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DPassmore


Hauling
Posts: 104
posted February 27, 2003 04:58 PM

I'm a big rotary fan but...

I AIN'T GOT ONE...Without the hole in the hood it would never close.I'm hoping to be finished this weekend and I'll disclose all the details.
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If someone with a split personality threatens suicide,is it a hostage situation?

       
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