285x19.5s

[CUMMINZ]

Anyone running 285x19. 5s on SRW 2500/3500?

 

[67guzzler]

I almost was. I couldn't get past the total price for tires and wheels. The diameter is around 35. 1 to 35. 5" for the 285/70R19. 5's. They should work fine but may rub at a full lock..... I've seen just one picture of a truck with 285/70R19. 5 tires and this was at the Rickson site. I love the look: http://www.ricksontruck.com/customers/80/

 

[SRadke]

I have a set in the shed. Can't get wheels with the right offset though



-Scott

 

[Subby]

What do you mean when you say "right offset"? I know what offset is but why don't the current offerings work for you? Thanks

 

[67guzzler]

Subby,



Offset: The distance from the centerline of the wheel to the mounting surface of the wheel.



Back Spacing: The distance from the backside of the wheel mounting pad to the outside of the rim flange.



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You can read all about it and more here:



http://www.rsracing.com/tech-wheel.html



So for Ram 2500 & 17"x8" factory wheel has a 2" offset and a 6" backspace. What Scott is referring to above is that if there isn't enough offset, the wheel will stick out. The Ram has quite a bit of offset to tuck the tire in closer to the wheel well. There aren't a lot of wheels out there that will provide the equivalent offset to keep the wheel from sticking out the wheel well.



Now for academic purposes if you have a 17"x10" wheel with a 2" offset your backspacing would be 7".



I hope this helps!

 

[Subby]

JGann,



Thanks! That is a great pic.

Does SRadke want to keep stock offset?

 

[67guzzler]

JGann,



Thanks! That is a great pic.

Does SRadke want to keep stock offset?

Subby,



I updated my post above with some more explanation.



Yes -- And I wanted something close too. That and price were why I gave up on the Rickson 19. 5" alloy option and went with LT315/70R17D balloons mounted on my factory wheels. Rickson's Steel wheel have a 1. 45" offset and that would have been good enough but I really wanted the alloys... .



-J

 

[SRadke]

Something close to the stock offset yes. Maintaining stock offset not only keeps the tires under your truck but maintains the steering geometry and provides less wear on steering parts. Granted the wear thing is a weak argument but I just don't like the tires sticking out look. Most of the current wheels offerings move the centerline of the wheel/tire out 1-1. 7 inches. Consider the additional width of a 285/70/19. 5 and now the outside of your tire has moved out 2-2. 5 inches from stock.



-Scott

 

[67guzzler]

Something close to the stock offset yes. Maintaining stock offset not only keeps the tires under your truck but maintains the steering geometry and provides less wear on steering parts. Granted the wear thing is a weak argument but I just don't like the tires sticking out look. Most of the current wheels offerings move the centerline of the wheel/tire out 1-1. 7 inches. Consider the additional width of a 285/70/19. 5 and now the outside of your tire has moved out 2-2. 5 inches from stock.



-Scott

Scott -- Where your ears burning?

 

[SRadke]

Not burning exactly, just trying to keep it simple.



-Scott

 

[67guzzler]

Just joshing w/ya

 

[SRadke]

Hey, I'm easy I may just call the wheel manufacturers tomarrow and give them a piece of my burning ear though.....

 

[67guzzler]

I wish you would! We'd all benefit from that!!! Rickson did say that early next year they should have a version of their alloys with the proper offset... . Time will tell if they really do come up with something... .

 

[CUMMINZ]

http://www.stocktonwheel.com/

These folks will custom build.





http://www.stocktonwheel.com/

 

[SRadke]

I read about a guy who had them build him a set of wheels. The tolerances were terrible and he never did get the correct wheels. This was an extreme case but I've heard of more dissatisfied customers than otherwise.



-Scott

 

[CJ Lagos]

Having the tire stick out another 1-1. 5" seems like a small price to pay for the increased stability, safety and capacity of 19. 5" tires.

 

[Subby]

Why don't Ricksons and the others just offer stock offset? What's their reasoning for the current offerings?

 

[67guzzler]

The offset of 2" on an 8" rim (net 6" backspacing) is pretty extreme and there aren't a lot of trucks that need that. Rickson and the others start with stock that covers the most vehicle models. They'd have to make "special" starting stock to cut wheels with this offset. From speaking with Scott at Rickson's he said they're trying to get a larger offset alloy wheel by the beginning of 2006. In the meantime, their steel wheels with the 1. 45" offset on a 7. 5" wheel are very close to the factory -- but you'll have steel.....

 

[Vaughn MacKenzie]

Dodge started going with the high offset some time ago, but the good news is Ford has now followed suit with their latest SuperDuty so now the market should put more pressure on the wheel manufacturers to build the right offset.



Vaughn

 

[67guzzler]

Dodge started going with the high offset some time ago, but the good news is Ford has now followed suit with their latest SuperDuty so now the market should put more pressure on the wheel manufacturers to build the right offset.



Vaughn

I didn't know that about Ferd. That is good news.