Off Roading Coil spacers and tire size

[ben_ak]

At just over 35,000 miles on my '00 2500 4x4 my stock 265/75-16's are pretty close to the wear bars. I am getting ready to buy new tires but I also was considering buying the RevTek coil spacers and larger size tires. I was wondering how big you can or should go with these spacers and what is the best way to keep your speedo correct. By the way, I never really tow more than six or seven thousand pounds so load range D vs. E isn't that much of a concern (although tread wear is). I will be keeping the factory alloys on my truck.



Thanks for the input,

Ben

 

[Got Smoke?]

You could go all the way to 315/75/16's but you might get some partial rub either in the lower rear fender or on the control arm.



I'd recommend the 2. 5" Skyjacker Coil springs over spacers personally. They only cost about $20-30 more than just about every spacer on the market.



You can get them thru Summit Racing for $149 for the pair. Part # SJA-D25.



That should give you plenty of room if you choose to go with 315/75/16's, but you could just go up one size to 285/75/16's (or 305/70/16's, same size little wider) and have plenty of room.



All depends on personal preference.



I just ordered my coils Friday, and I was gonna go with 35's(I have 16. 5" wheels), but I plan on sled pulling a few times next year if I can get a few goodies between now and then so I'm going to stay with 33's so I won't have to much trouble with wheel spin.

 

[y-knot]

I have the DAYSTAR poly spacers, they are sold by most of the advertisers in the mags. Are they better then someone elses? I can not say, they were well made and have be trouble free for going on 2 1/2 years. You get what you feel comfortable with. I also have had very good luck with BFG tires, I usually run mud tires and most other brands don't compare to the mileage I can get out of the BFG's. I have them on two of my trucks now, and I am completly satisfied. Just thought you might like the info? Don't forget you need longer shocks.

 

[Got Smoke?]

Originally posted by y-knot

Don't forget you need longer shocks.

Yeah I forgot you would need longer shocks, especially with the coils. However you can get by without them. I'm not going to replace mine right because I can't afford a whole set so I'm going to wait till I can get a complete set.



Also while I've heard good mileage #'s of BFG MT's on CTD's the AT/KO (which is what I'm going with) will get more mileage because of the tighter tread pattern.



It all depends on what you want. I'm not trying to influence in anyway, just offer my opinion and share what I am doing.

 

[HillCountrykid]

You should'nt have any problems with the 285's, and 315's may fit without much rubbing. My 305's barely rub the rear of the pass. side wheel liner with aftermarket wheels. Are you trying to fit the biggest tire possible or just looking to go bigger?



I over-extended and ruined one of my stock length Rancho's after the spring install. Don't know if you've ordered longer ones, but it would be the safe thing to do.



I've always had good luck with BFG's and love the MT's. They wear suprisingly well. The AT will give you better wear if you don't need the extra traction.



Brian

 

[ben_ak]

As far as going as big as possible or still functional, I would say I am looking for the best comprimise between the two. I have also had good luck with BFG's. I had AT/ko's on my old '93 F-150 and the old style MT's on my first truck, an '86 Ranger (yes, I've upgraded over the years ). I think I will go with BFG's again. My only other question is if anyone has run 315's with a spacer and any after-market winch bumper and had clearance problems. I will most likely get an ARB or Buckstop bumper in the near future and would hate to have to hack a brand new bumper... but I will.



Thanks,

Ben

 

[tpruitt]

Tires

i don't know if you are interested in these tires that i have. they are 315/75R16. they have about half the tread still on them. They are Dunlop Rover RV. this tread is in between a AT and a MT. i have a pic on the Classified i don't know if they have been posted yet but if so you can see them there. tire are in great shape.



Later,

Trey

 

[ben_ak]

I'm interested but your a long way from Alaska. Shipping would be a bit high. Were you happy with your Dunlops?

 

[tpruitt]

The dunlops did great on my truck. Good ride no vibrations, and no humming. They have worn really well. i have had them on for about a year and they still have over half the tread if not a little more. the only reason i did not get them when i got the taller tires is because they did not make a 37 and thats what i needed to fill the wheel well.



Later,



Trey

 

[BreaksEverything]

Originally posted by ben_ak

At just over 35,000 miles on my '00 2500 4x4 my stock 265/75-16's are pretty close to the wear bars. I am getting ready to buy new tires but I also was considering buying the RevTek coil spacers and larger size tires. I was wondering how big you can or should go with these spacers and what is the best way to keep your speedo correct. By the way, I never really tow more than six or seven thousand pounds so load range D vs. E isn't that much of a concern (although tread wear is). I will be keeping the factory alloys on my truck.



Thanks for the input,

Ben

spacers are ok but IMO spend a few more $$ & get custom coils for the height & load you want , you'll ( I was ) a lot happier



my 6" lift w/ a 6350 # spring pack in front was $300 & the ride didn't change much that I noticed other than I don't have a lot of body roll

 

[ben_ak]

I'm going with the Skyjacker springs instead of spacers and I just got my new ARB bumper so now all I need is to decide what brand of tire to get. Thanks for all your opinions. By the way, I'll post pics of my ARB install in this forum when the truck gets back from the body shop - I'm getting a fender fixed before the new bumper goes on.



Thanks again,

Ben

 

[Got Smoke?]

Originally posted by ben_ak

I'm going with the Skyjacker springs instead of spacers and I just got my new ARB bumper so now all I need is to decide what brand of tire to get. Thanks for all your opinions. By the way, I'll post pics of my ARB install in this forum when the truck gets back from the body shop - I'm getting a fender fixed before the new bumper goes on.



Thanks again,

Ben

Good choice. I got mine installed Tuesday. My old springs must have really been sagging cause I've put like 300 miles on my truck since Tuesday and its still sitting bulldog style (nose high).



I love 'em they ride great! (now I just need some 2" longer shocks)

 

[BCurtis]

Ben_AK

With the D25 do you need any other mods to suspension? Track bars?

 

[ben_ak]

I am also going to install Bilstein shocks. It seems many members are happy with the performance they offer. The P/N's for this application are BE5-6681-H5 Front and BE5-6682-H5 Rear.

As far as steering modifications, I am not aware of any absolutely necessary modifications, so if anybody knows something I don't, please let me know. I think I will look into the DSS/DT combo for a bit more longevity up front. One thing to consider if you are wanting to run 315/70 16" tires is the possibility of needing an upgraded steering damper/stabilizer (315 series tires are the equivalent of 35" tall tires - the industry "cut off" size necessitating upgraded/dual stabilizers). If you want to have an accurate speedometer with your larger tires are two or three choices for calibrating boxes to adjust the speed sensors' output to an accurate signal for the speedo. Superlift makes the TruSpeed (Superlift P/N 33002 Dodge 2 & 4WD '92-'02), and Abbott makes the Electronic Ratio Adapter for RW ABS trucks. I think there is a third option but I don't remember. I guess that covers it.



-Ben

 

[Duluth Diesel]

I'm running 315 75 16 Cooper Discover ST tires on stock rims, stock height, and only rub at full lock on the track bar. I knew this would happen when I bought the tires, so when I hear them start to rub, and back off the wheel a bit. Didn't loose any NOTICABLE turning radius, and like the better ride and traction of the big tires.



I've heard of people needing lifts and others not needing lifts to fit 315s. My 2500HD has the plow prep and camper springs, so this factory height is enough to clear the tires. People with lower-riding trucks will need springs or at least spacers.



I've been running Coopers for years and have had ZERO problems with them on many trucks.



http://www.coopertires.com/us/en/ProductDetails.asp?ProdType=LtTruck&id=190



http://www.coopertires.com.au/tyres/st.htm

/\/\/\ this site is an Australian site that is worth reading about the S/T tires.