Re: Much difference between 30's and 31's?
 

I think you're thinking of what Daimler would sells as the 30"
group, Jeff replaced them with new 30" BFGs.
God Bless America, ßill O|||||||O
mailto:-------------------- http://www.----------.com/

Del Rawlins wrote:
>
> It isn't quite that simple because of the differences between nominal
> and actual sizes of tires. A lot of 30s are really only 29 or 29.5
> inches tall, whereas most 31s are just about right on 31 inches. And
> while that might not make a very big difference in clearance, it will
> have a bigger impact on his RPM at cruising speeds. With his 4.10
> gearing a 31" tire would probably be a better choice, although I would
> personally want to go for 32s, since that gives the same overall ratio
> with 4.10 that I have with 30 inch tires and 3.73 gearing, which is a
> good all around combination.
>
> Whether or not it is worth switching is something that nobody here can
> answer for him.
>
> ----------------------------------------------------
> Del Rawlins- del@_kills_spammers_rawlinsbrothers.org
> Remove _kills_spammers_ to reply via email.
> Unofficial Bearhawk FAQ website:
> http://www.rawlinsbrothers.org/bhfaq/

Re: Much difference between 30's and 31's?
 

I think you're thinking of what Daimler would sells as the 30"
group, Jeff replaced them with new 30" BFGs.
God Bless America, ßill O|||||||O
mailto:-------------------- http://www.----------.com/

Del Rawlins wrote:
>
> It isn't quite that simple because of the differences between nominal
> and actual sizes of tires. A lot of 30s are really only 29 or 29.5
> inches tall, whereas most 31s are just about right on 31 inches. And
> while that might not make a very big difference in clearance, it will
> have a bigger impact on his RPM at cruising speeds. With his 4.10
> gearing a 31" tire would probably be a better choice, although I would
> personally want to go for 32s, since that gives the same overall ratio
> with 4.10 that I have with 30 inch tires and 3.73 gearing, which is a
> good all around combination.
>
> Whether or not it is worth switching is something that nobody here can
> answer for him.
>
> ----------------------------------------------------
> Del Rawlins- del@_kills_spammers_rawlinsbrothers.org
> Remove _kills_spammers_ to reply via email.
> Unofficial Bearhawk FAQ website:
> http://www.rawlinsbrothers.org/bhfaq/

Re: Much difference between 30's and 31's?
 

Moving from 30" to 31" is only a 3% change, or about 100 RPM at 65
MPH....not worth
doing in my opinion.

Walt Johnson
99 TJ

Re: Much difference between 30's and 31's?
 

Moving from 30" to 31" is only a 3% change, or about 100 RPM at 65
MPH....not worth
doing in my opinion.

Walt Johnson
99 TJ

Re: Much difference between 30's and 31's?
 

Moving from 30" to 31" is only a 3% change, or about 100 RPM at 65
MPH....not worth
doing in my opinion.

Walt Johnson
99 TJ

Re: Much difference between 30's and 31's?
 

On 2 Mar 2004 20:31:06 GMT, Del Rawlins
<del@_kills_spammers_rawlinsbrothers.org> wrote:

>In <g2m8405fdc7f4khjmghcdvtkah40sb2q31@4ax.com> David C. Moller wrote:
>> With only 12K on your current BFG AT's, no way would I be looking to
>> move to 31's. You're only talking about an extra half inch of
>> clearance (then again, having *no* dent in your oil pan is better than
>> having a half an inch dent, if you know what I mean hehehe). Maybe if
>> you could get a buyer lined up for your AT's at a decent price it
>> would be worth the switch.
>
>It isn't quite that simple because of the differences between nominal
>and actual sizes of tires. A lot of 30s are really only 29 or 29.5
>inches tall, whereas most 31s are just about right on 31 inches. And
>while that might not make a very big difference in clearance, it will
>have a bigger impact on his RPM at cruising speeds. With his 4.10
>gearing a 31" tire would probably be a better choice, although I would
>personally want to go for 32s, since that gives the same overall ratio
>with 4.10 that I have with 30 inch tires and 3.73 gearing, which is a
>good all around combination.
>
>Whether or not it is worth switching is something that nobody here can
>answer for him.
>
>----------------------------------------------------
>Del Rawlins- del@_kills_spammers_rawlinsbrothers.org
>Remove _kills_spammers_ to reply via email.
>Unofficial Bearhawk FAQ website:
>http://www.rawlinsbrothers.org/bhfaq/

True Del, but as I recall, he was talking about switching from BFG AT
30's to BFG MT 31's. That's going to make the manufacturer variances
in sizes pretty much a wash IMO.

Dave

Re: Much difference between 30's and 31's?
 

On 2 Mar 2004 20:31:06 GMT, Del Rawlins
<del@_kills_spammers_rawlinsbrothers.org> wrote:

>In <g2m8405fdc7f4khjmghcdvtkah40sb2q31@4ax.com> David C. Moller wrote:
>> With only 12K on your current BFG AT's, no way would I be looking to
>> move to 31's. You're only talking about an extra half inch of
>> clearance (then again, having *no* dent in your oil pan is better than
>> having a half an inch dent, if you know what I mean hehehe). Maybe if
>> you could get a buyer lined up for your AT's at a decent price it
>> would be worth the switch.
>
>It isn't quite that simple because of the differences between nominal
>and actual sizes of tires. A lot of 30s are really only 29 or 29.5
>inches tall, whereas most 31s are just about right on 31 inches. And
>while that might not make a very big difference in clearance, it will
>have a bigger impact on his RPM at cruising speeds. With his 4.10
>gearing a 31" tire would probably be a better choice, although I would
>personally want to go for 32s, since that gives the same overall ratio
>with 4.10 that I have with 30 inch tires and 3.73 gearing, which is a
>good all around combination.
>
>Whether or not it is worth switching is something that nobody here can
>answer for him.
>
>----------------------------------------------------
>Del Rawlins- del@_kills_spammers_rawlinsbrothers.org
>Remove _kills_spammers_ to reply via email.
>Unofficial Bearhawk FAQ website:
>http://www.rawlinsbrothers.org/bhfaq/

True Del, but as I recall, he was talking about switching from BFG AT
30's to BFG MT 31's. That's going to make the manufacturer variances
in sizes pretty much a wash IMO.

Dave

Re: Much difference between 30's and 31's?
 

On 2 Mar 2004 20:31:06 GMT, Del Rawlins
<del@_kills_spammers_rawlinsbrothers.org> wrote:

>In <g2m8405fdc7f4khjmghcdvtkah40sb2q31@4ax.com> David C. Moller wrote:
>> With only 12K on your current BFG AT's, no way would I be looking to
>> move to 31's. You're only talking about an extra half inch of
>> clearance (then again, having *no* dent in your oil pan is better than
>> having a half an inch dent, if you know what I mean hehehe). Maybe if
>> you could get a buyer lined up for your AT's at a decent price it
>> would be worth the switch.
>
>It isn't quite that simple because of the differences between nominal
>and actual sizes of tires. A lot of 30s are really only 29 or 29.5
>inches tall, whereas most 31s are just about right on 31 inches. And
>while that might not make a very big difference in clearance, it will
>have a bigger impact on his RPM at cruising speeds. With his 4.10
>gearing a 31" tire would probably be a better choice, although I would
>personally want to go for 32s, since that gives the same overall ratio
>with 4.10 that I have with 30 inch tires and 3.73 gearing, which is a
>good all around combination.
>
>Whether or not it is worth switching is something that nobody here can
>answer for him.
>
>----------------------------------------------------
>Del Rawlins- del@_kills_spammers_rawlinsbrothers.org
>Remove _kills_spammers_ to reply via email.
>Unofficial Bearhawk FAQ website:
>http://www.rawlinsbrothers.org/bhfaq/

True Del, but as I recall, he was talking about switching from BFG AT
30's to BFG MT 31's. That's going to make the manufacturer variances
in sizes pretty much a wash IMO.

Dave

Re: Much difference between 30's and 31's?
 

In <4045049E.81D244C9@cox.net> L.W.(ßill) ------ III wrote:
> Yup, that's Jeff told us. And what do all four cylinders come
> with? You want Jeff to throw away his 30" BFG tires after only
> having a quarter use of them?

I just misundertood that part of your post, thinking that you believed
his Jeep to be a 2.5L. Actually I don't really care what he does with
his 30 inchers, I was just saying that 31" would be a step in the right
direction for his engine and gearing. My real opinion is that if he had
bought a Jeep with 3.73s to begin with he would have been a lot happier
waiting until it is convenient for him to lift the Jeep and install the
tires he really wants. He got to where he is now by half measures (
first with the 30s, then the regear) and another half measure will still
be sub optimal, but he'd at least be happier with the 31s than he is
with the 30s. Whether that is enough to justify the expense is a
question for the man in the mirror.

It is questions like this that make me glad I custom ordered my Jeep the
way I wanted it, or at least as close as Daimler would build for me.
With 3.73 gears, 30" tires, a truetrac in front and a trashlock/d35c(rap)
in the rear, it is a reasonably well balanced rig that I am happy
driving on and off road.

At some point I'd like to upgrade to 32" tires, regear to 4.10, install
an electrac equipped D44 and a 2-3" lift but doing any one of those mods
without the others would turn the Jeep into something I wouldn't be
happy with. So I will wait until I can do them all at once. All that
because I want ABS, which Daimler won't give you with the D44, although
the aftermarket will at 4 times the price (plus shipping to Alaska).

----------------------------------------------------
Del Rawlins- del@_kills_spammers_rawlinsbrothers.org
Remove _kills_spammers_ to reply via email.
Unofficial Bearhawk FAQ website:
http://www.rawlinsbrothers.org/bhfaq/

Re: Much difference between 30's and 31's?
 

In <4045049E.81D244C9@cox.net> L.W.(ßill) ------ III wrote:
> Yup, that's Jeff told us. And what do all four cylinders come
> with? You want Jeff to throw away his 30" BFG tires after only
> having a quarter use of them?

I just misundertood that part of your post, thinking that you believed
his Jeep to be a 2.5L. Actually I don't really care what he does with
his 30 inchers, I was just saying that 31" would be a step in the right
direction for his engine and gearing. My real opinion is that if he had
bought a Jeep with 3.73s to begin with he would have been a lot happier
waiting until it is convenient for him to lift the Jeep and install the
tires he really wants. He got to where he is now by half measures (
first with the 30s, then the regear) and another half measure will still
be sub optimal, but he'd at least be happier with the 31s than he is
with the 30s. Whether that is enough to justify the expense is a
question for the man in the mirror.

It is questions like this that make me glad I custom ordered my Jeep the
way I wanted it, or at least as close as Daimler would build for me.
With 3.73 gears, 30" tires, a truetrac in front and a trashlock/d35c(rap)
in the rear, it is a reasonably well balanced rig that I am happy
driving on and off road.

At some point I'd like to upgrade to 32" tires, regear to 4.10, install
an electrac equipped D44 and a 2-3" lift but doing any one of those mods
without the others would turn the Jeep into something I wouldn't be
happy with. So I will wait until I can do them all at once. All that
because I want ABS, which Daimler won't give you with the D44, although
the aftermarket will at 4 times the price (plus shipping to Alaska).

----------------------------------------------------
Del Rawlins- del@_kills_spammers_rawlinsbrothers.org
Remove _kills_spammers_ to reply via email.
Unofficial Bearhawk FAQ website:
http://www.rawlinsbrothers.org/bhfaq/