Author Topic: Wheel bolt pattern for 1979 Caddilac Eldorado is it 5X4.75 / 5X120.65??  (Read 104 times)

Offline nanaimogene

  • Posts: 43
  • Name: Gene McCormick
I would like to install a set of polished alloy race type rims. This will be 15 inch, no 17 to 20 wheels which is not for me. 15"wheels using stock tires. Stupid as it
may sound but Eldorado's come with front and rear disc brakes. I would like to brightly paint the calipers plus exposing the shine of the rotors. Caddy engineers were no dummies back in 1979. Prices on the fancy rims have come way down. My research shows 5X4.75 or 5X120.65 bolt pattern...is this correct?? Will my stock radial tires fit a 6 or 7 inch  wide rims ?  No local sellers here have 15" wheels for me to try since they don't stock them. In fact a 1979 is Vintage to them.  Thanks Gene

Offline TJ Hopland

  • Posts: 6712
Re: Wheel bolt pattern for 1979 Caddilac Eldorado is it 5X4.75 / 5X120.65??
« Reply #1 on: October 07, 2017, 10:02:04 AM »
I'm pretty sure the 4.75 is correct.   The previous larger Eldo was 5 as were the RWD cars.

There were alloy wheels available for the Eldo.  Most I have seen are the 'turbine' style that doesn't expose the brakes.  85 there was 'aluminum wheel'  and 'spoked aluminum wheel' options listed.   Not sure what the spoke version looked like.

Be sure to post pictures if/when you do it.  You see large wheels on those cars not 15's so I would be curious to see how they look.
StPaul/Mpls, MN USA

73 Eldo convert w/FiTech EFI
75 Eldo rusty but trusty
80 Eldo Diesel
And other assorted stuff I keep buying for some reason

Offline bcroe

  • Posts: 2016
    • CLC Member
      CLC Member #14630
Wheel bolt pattern for 1979 Caddilac Eldorado is it 5X4.75 / 5X120.65??
« Reply #2 on: October 07, 2017, 12:29:45 PM »
Those wheels have a much different offset than RWD; be sure replacements do
too.  Or, the steering geometry will be messed up, maybe even hit the fenders. 
Bruce Roe

Offline nanaimogene

  • Posts: 43
  • Name: Gene McCormick
Re: Wheel bolt pattern for 1979 Caddilac Eldorado is it 5X4.75 / 5X120.65??
« Reply #3 on: October 07, 2017, 03:15:20 PM »
This will be my fall / winter project by measuring inside and out for clearance's . Youtube shows its not that easy unless you get it bang on. My Eldorado will take one tire size larger without rubbing fender. Bruce is right FWD is RWD is  a big difference.  However I do like the current factory alloy Eldorado wheels. If I do succeed and get it right I will post it with pix. 15 inch wheels only.

Offline TJ Hopland

  • Posts: 6712
Re: Wheel bolt pattern for 1979 Caddilac Eldorado is it 5X4.75 / 5X120.65??
« Reply #4 on: October 07, 2017, 08:25:08 PM »
I believe the offset of the 79-85's was in the realm of what became typical FWD so its possible there are standard wheels that fit.   I think that range of offset is also common for many smaller 4x4 so there may even be something in a 15 that exists.  It was the 66-78 that was more like a dually truck. 
StPaul/Mpls, MN USA

73 Eldo convert w/FiTech EFI
75 Eldo rusty but trusty
80 Eldo Diesel
And other assorted stuff I keep buying for some reason

Offline cadillacmike68

  • Posts: 1074
  • Still finishing up this 1968
    • CLC Member
      CLC Member #15823
  • Name: M Santos
Re: Wheel bolt pattern for 1979 Caddilac Eldorado is it 5X4.75 / 5X120.65??
« Reply #5 on: October 07, 2017, 10:19:19 PM »
I believe the offset of the 79-85's was in the realm of what became typical FWD so its possible there are standard wheels that fit.   I think that range of offset is also common for many smaller 4x4 so there may even be something in a 15 that exists.  It was the 66-78 that was more like a dually truck. 

That would be 1967 - 1978. As TJ says 79 & later are much closer to what would become regular FWD offset rims.

120.65mm = 4.75in.
« Last Edit: October 07, 2017, 10:21:03 PM by cadillacmike68 »
Regards,
"Cadillac" Mike
Current:
1968 DeVille Convertible
1996 Fleetwood Brougham
2009 STS NorthStar Platinum ed RWD
2011 CTS PRemiun ed Sedan RWD
Past:
2008 CTS Premium ed Sedan AWD
2005 CTS Hi-Feature Sedan RWD
2000 ElDorado ESC Hard Boot Convertible
1995 Fleetwood Brougham
1973 Sedan DeVille
1970 Fleetwood Brougham
1969 DeVille Convertible