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John Deere Tractors Discussion Forum
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Re: Deere 4450 or 4455?

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Tx Jim

02-18-2013 06:13:07

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This topic was discussed on this forum on Feb. 14 under the heading of Changes/upgrades from 4450 to 4455. Basically 55 series get a little better fuel economy with an updated free flowing cyl head.

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MF Poor

02-18-2013 06:42:35

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 Re: Deere 4450 or 4455? in reply to Tx Jim, 02-18-2013 06:13:07  
And thanks to everyone who replied to that Feb 14th post. I bought the 4455 over the weekend. It'll be delivered late today. It's a 1990 model, PS, MFWD, excellent rubber (20.8X38 rears) duals, full weights, 3 scv outlets, front fenders, 3939hrs, and dynos (@ dealer) 155hp. Checked out by nearby Deere dealer that I'm familiar with (and trust) I paid $39,000, which isn't cheap, but IS a decent deal when condition is considered. Looking forward to giving my 4440 a rest this spring!

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Eric Hartman

02-19-2013 20:29:03

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 Re: Deere 4450 or 4455? in reply to MF Poor, 02-18-2013 06:42:35  
I think you made a good choice. The 15 speed powershift is a wonderful transmission for all applications and the engine in the 55 series has a lot going for it in terms of cold weather starting, torque, governor response, and fuel usage. There is nothing wrong with the 4450 with the quad range, but the step up to the 55 series, in my opinion, is a much greater refinement in these tractors. I like our quad range in our 40 series, and it is fine for field work. The 8 speed powershift was also nice for on the go shifting over wide speed ranges in our 30 series, but the gaps between the upper range of gears were pretty big. I find our 60 series with the 15 speed powershift a joy to operate with an even better cab as compared to earlier models. The engine is very snappy and quick to respond to varying loads. Nothing wrong with the 40 or 50 series, but there are marked improvements with each newer succession in the line.

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02-21-2013 14:07:37

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 Re: Deere 4450 or 4455? in reply to Eric Hartman, 02-19-2013 20:29:03  
The 15 speed is pretty lousy for loader work. If I was buying a deere to put a loader on it I'd pay extra for any of the quad transmissions, especially a powerquad. The full powershift is too slow in reverse, is too far of a reach to shift, and I can never get it into the gear I want from a stop.

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Tx Jim

02-22-2013 04:06:18

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 Re: Deere 4450 or 4455? in reply to scotc, 02-21-2013 14:07:37  
Quoting Removed, click Modern View to see
My 4255 operators manual shows a 15 speed Powershift will go 5.48 MPH in 4th reverse. How fast do you chose to back up??

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Tx Jim

02-18-2013 09:03:05

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 Re: Deere 4450 or 4455? in reply to MF Poor, 02-18-2013 06:42:35  
Sounds as if you found a good tractor. I'll bet you'll enjoy it. You need to consider changing your handle to "JD poor" :wink:

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MF Poor

02-18-2013 09:13:09

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 Re: Deere 4450 or 4455? in reply to Tx Jim, 02-18-2013 09:03:05  
Or JD Rich! They always seem to be worth MORE as time goes on, rather than depreciating in value

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02-18-2013 06:17:05

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 Re: Deere 4450 or 4455? in reply to Tx Jim, 02-18-2013 06:13:07  
thanks Tx Jim,how about a 4250? ho do they compare to the 4450/55? really like the one im looking at except it has 9900 hours..but it is well maintained and really nice and original.

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Tx Jim

02-18-2013 06:21:36

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 Re: Deere 4450 or 4455? in reply to Ernie3564, 02-18-2013 06:17:05  
4250's are just as good as the rest of the 50/55 series RC tractors. I have a 4255 with 10,500 hrs that has been a good tractor. I've owned it since '93. I've seen them go 12000-15000 hrs before an overhaul is required. It all depends on the quality of maintenance.

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cooney minnie

02-18-2013 12:13:26

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 Re: Deere 4450 or 4455? in reply to Tx Jim, 02-18-2013 06:21:36  
the 4455 was a good choice... i'd pick a powershift over a quad any day of the week.

As to the 4250, a JD service manager told me a few years ago that the rear end of some of them, I think those with long axles, is the same as the 4450, while the short axled version is a little lighter. Any truth to this?

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Tx Jim

02-18-2013 12:48:14

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 Re: Deere 4450 or 4455? in reply to cooney minnie, 02-18-2013 12:13:26  
Quoting Removed, click Modern View to see

4250's have 86 MM axles & 4450'S HAVE 92 MM axles

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