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BajaParrothead
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Posts: 460
Registered: 12-4-2012
Location: Portola, CA / Los Barriles
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"My new Ford came with 18s and I and too cheap to switch to 17s. If I would switch to 17s I would try to keep the tire the same diameter to avoid new
gearing."
=== === =
I found on my 2019 Ram that they went to a 20" wheel to accommodate the larger brake rotors and calipers. Even if I wanted to go down to a 16" or
17", I can't.
[Edited on 9-19-2019 by JZ][/rquote][/rquote]
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mtgoat666
Select Nomad
Posts: 19704
Registered: 9-16-2006
Location: San Diego
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Mood: Hot n spicy
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Quote: Originally posted by PaulW  |
My new Ford came with 18s and I and too cheap to switch to 17s. If I would switch to 17s I would try to keep the tire the same diameter to avoid new
gearing.
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when i bought my new F-150 a couple years ago, wheel size was an option, and I wanted 17" for better ride quality on rough roads and offroad, and was
pleased that 17" was cheapest option of available wheels.
the trend of large rims on full size pickups is a fad that for shallow posers. if that fad of blingy wheels is your thing, why are you buying a
pickup?
Woke!
Hands off!
“Por el bien de todos, primero los pobres.”
“...ask not what your country can do for you – ask what you can do for your country.” “My fellow citizens of the world: ask not what America
will do for you, but what together we can do for the freedom of man.”
Pronoun: the royal we
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matthew_mangus
Junior Nomad
Posts: 82
Registered: 10-4-2019
Location: Portland, OR
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I've learned over the years (often the hard way) that going big is for rookies and posers. I'm now trending the other way and going just large enough
to get the job done. My primary rig ( I have 4 ) is running 285/75/17s and I'll likely downsize again to 70s the next time I buy tires.
I also have learned to be critical of tire / wheel sizes when other rigs are joining in on an adventure. A Range Rover sport w/ turbo on 20's w/ a
Brembo big brake kit may be miles ahead of the convoy when on pavement, but then falls way behind and becomes a liability when we are aired down and
he doesn't have enough sidewall to be able to float over the rocks. I have two friends who have been politely notified that they are no longer welcome
on trips where we typically air down.
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David K
Honored Nomad
Posts: 65242
Registered: 8-30-2002
Location: San Diego County
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Mood: Have Baja Fever
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| Quote: Originally posted by matthew_mangus | I've learned over the years (often the hard way) that going big is for rookies and posers. I'm now trending the other way and going just large enough
to get the job done. My primary rig ( I have 4 ) is running 285/75/17s and I'll likely downsize again to 70s the next time I buy tires.
I also have learned to be critical of tire / wheel sizes when other rigs are joining in on an adventure. A Range Rover sport w/ turbo on 20's w/ a
Brembo big brake kit may be miles ahead of the convoy when on pavement, but then falls way behind and becomes a liability when we are aired down and
he doesn't have enough sidewall to be able to float over the rocks. I have two friends who have been politely notified that they are no longer
welcome on trips where we typically air down. |
Man, that's awesome! I would like to wheel with you! 
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AKgringo
Elite Nomad
Posts: 6179
Registered: 9-20-2014
Location: Anchorage, AK (no mas!)
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Mood: Retireded
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"My primary rig ( I have 4 ) is running 285/75/17s and I'll likely downsize again to 70s the next time I buy tires. "
My choice would be to stick with the 75 aspect, and lose some width. A 265/75 aired down should have plenty of surface area for flotation, and would
be a better handling tire on the road, especially wet roads!
If you are not living on the edge, you are taking up too much space!
"Could do better if he tried!" Report card comments from most of my grade school teachers. Sadly, still true!
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TMW
Select Nomad
Posts: 10659
Registered: 9-1-2003
Location: Bakersfield, CA
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My recently purchased 2006 Toyota 4Runner has 18 inch rims. I tried to put one of my 04 Tacoma 16 inch rim on and it was too small.It would go on but
not rotate, locked against the rotor. In 2006 Toyota made three versions of the 4Runner two with 16 inch rims and the Limited with 18 inch. I haven't
decide how much I'll do to it for off road That's why I have my Tacoma. I think I'll put rock slider on it and get rid of the goofy step board.
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Ken Cooke
Elite Nomad
Posts: 8963
Registered: 2-9-2004
Location: Riverside, CA
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Mood: Pole Line Road postponed due to injury
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I have 35"x12.5r15s on the little Jeep.
Currently, LT285 17's on the Jeep (Gladiator) truck.
Next size up for the Gladiator JT is either 37" or 38"
A 2". Daystar spacer lift is sitting in the garage 
Aftermarket 17x8" (beadlocks) wheels are part of the plan.
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PaulW
Ultra Nomad
Posts: 3113
Registered: 5-21-2013
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Check into using a spacer. It is a common solution to caliper to wheel interference. If you go that way be sure you do not cheap out. Buy a quality
spacer. Your vehicle specific forums will guide you.
| Quote: Originally posted by TMW | | My recently purchased 2006 Toyota 4Runner has 18 inch rims. I tried to put one of my 04 Tacoma 16 inch rim on and it was too small.It would go on but
not rotate, locked against the rotor. In 2006 Toyota made three versions of the 4Runner two with 16 inch rims and the Limited with 18 inch. I haven't
decide how much I'll do to it for off road That's why I have my Tacoma. I think I'll put rock slider on it and get rid of the goofy step board.
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TMW
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Thanks Paul, I never considered that.
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matthew_mangus
Junior Nomad
Posts: 82
Registered: 10-4-2019
Location: Portland, OR
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Hmmm, I dunno. After your latest adventures in Raptors, we'd probably be pretty boring to you. 
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David K
Honored Nomad
Posts: 65242
Registered: 8-30-2002
Location: San Diego County
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Mood: Have Baja Fever
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Nope, I respect your four-wheeling style. I love going to places in low range and where lockers or traction control gets you there safely with minimal
body damage.
The road to Mission Santa María is a favorite trip of mine as it combines many things that make Baja special for me. Riding in a Raptor driven by
Curt LeDuc or Cameron Steele is fun but not the way I normally drive in Baja (in my Off-Road TRD Tacoma 4x4).
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matthew_mangus
Junior Nomad
Posts: 82
Registered: 10-4-2019
Location: Portland, OR
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| Quote: Originally posted by David K | Nope, I respect your four-wheeling style. I love going to places in low range and where lockers or traction control gets you there safely with minimal
body damage.
The road to Mission Santa María is a favorite trip of mine as it combines many things that make Baja special for me. Riding in a Raptor driven by
Curt LeDuc or Cameron Steele is fun but not the way I normally drive in Baja (in my Off-Road TRD Tacoma 4x4). |
Right on. I'll have to coordinate an adventure with you some time.
Is the Mision de Santa Maria accessed via the dirt track that starts in the NW corner of the Ranch Santa Ynes airstrip? Also, do you reach the Oasis
Santa Maria by following the same track until it eventually disssapears in the riverbed?
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Doug/Vamonos
Nomad
Posts: 418
Registered: 6-19-2006
Location: Bahia de los Angeles
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My 05 F-250 has 18s. True, not a big choice of tires in that size rim. But I've settled on Nitto Trail Grappler M/Ts on LT285x75x18. I'd prefer 17s
but have been too cheap to replace the wheels/tires and I like to look of the factory 18s. The 285s are pretty close to 35".
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PaulW
Ultra Nomad
Posts: 3113
Registered: 5-21-2013
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Doug. That tire is almost exactly a 34" diameter tire @ 592 rev/mile
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David K
Honored Nomad
Posts: 65242
Registered: 8-30-2002
Location: San Diego County
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Mood: Have Baja Fever
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| Quote: Originally posted by matthew_mangus | | Quote: Originally posted by David K | Nope, I respect your four-wheeling style. I love going to places in low range and where lockers or traction control gets you there safely with minimal
body damage.
The road to Mission Santa María is a favorite trip of mine as it combines many things that make Baja special for me. Riding in a Raptor driven by
Curt LeDuc or Cameron Steele is fun but not the way I normally drive in Baja (in my Off-Road TRD Tacoma 4x4). |
Right on. I'll have to coordinate an adventure with you some time.
Is the Mision de Santa Maria accessed via the dirt track that starts in the NW corner of the Ranch Santa Ynes airstrip? Also, do you reach the Oasis
Santa Maria by following the same track until it eventually disssapears in the riverbed? |
The road to the mission begins at the far left gate (as seen when driving to the ranch from Hwy. 1) from the old restaurant/ ranch of Santa Ynez...
the opposite side from the airport. See it on Google Earth.
There are two oasis locations associated with Santa María, perhaps three:
a) The first palms you drive through, below the 'widowmaker' grade, about 1 mile before the mission.
b) The oasis we camped next to in 2007 is a mile past the mission and then back up the arroyo from the road. This is where the bighorn sheep visited
us.
c) The "La Poza de Escuadra" as some have called it which is in the canyon maybe 3 miles beyond the mission... a long, steep hike is required to the
end of the bulldozed road, then down into the canyon on the Indian Trail (El Camino Real before 1768, replaced by a new route on the north rim of the
canyon). This is the oasis on my map...
Here are my last two trip webpages, to the mission. The 2007 one contains a road log:
2007: http://vivabaja.com/msm/
2010: http://vivabaja.com/msm2010/
ROAD LOG
0.0 Rancho Santa Ynez, take road through left gate, north of ranch.
0.9 FORK, go left/ uphill.
1.8 Deep Gully, 4WD climb out (if this scares you, go back!).
2.4 Rock pile, a road to left, go straight/ right fork.
4.7 Cement monument off to left (tracks continue past monument).
5.6 Arroyo crossing with palms.
9.9 Peninsular Divide, view of Punta Final on the gulf.
13.3 Top of the 'Widowmaker' grade.
14.4 MISION SANTA MARIA
15.4 Road enters sandy Arroyo Santa Maria, after very steep downgrade. (Bighorn oasis to the left)
15.7 Turn left, out of arroyo (may be hidden by plants). Tracks ahead in arroyo end in 1/4 mile.
15.9 El Camino Real climbs to the left, up hillside. The mission trail stays out of the canyon, along the north ridge and returns to the arroyo at the
east end of the canyon.
16.0 Roadbed washed out. Park and hike on to end of bulldozed grade to see petroglyphs, canyon view, Indian trail to canyon bottom.
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JZ
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Posts: 12658
Registered: 10-3-2003
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It's almost 35. 34.83.
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Doug/Vamonos
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Location: Bahia de los Angeles
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Details, details. :-)
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mtgoat666
Select Nomad
Posts: 19704
Registered: 9-16-2006
Location: San Diego
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Mood: Hot n spicy
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35.08”
Woke!
Hands off!
“Por el bien de todos, primero los pobres.”
“...ask not what your country can do for you – ask what you can do for your country.” “My fellow citizens of the world: ask not what America
will do for you, but what together we can do for the freedom of man.”
Pronoun: the royal we
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JZ
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Posts: 12658
Registered: 10-3-2003
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Your calculator is no bueno.
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PaulW
Ultra Nomad
Posts: 3113
Registered: 5-21-2013
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For those failing math education or forgetting how to do the math
Tire diameter = 63360/(pi*RPM)
Or 63360/(3.1416 * 592)=34.07”
Here is the derivation 5280(12)/Pi(RPM)=diameter in inches
Pi = 3.1416 and RPM is manufacturers rev per mile.
For better understanding go read
https://sciencing.com/calculate-tire-turns-per-mile-7797454....
What you get from various tables from the web just ignore because they are just approximations.
You might want to know that using the science and correct math when I adjusted my speedo via the ECU I used the math above and got exact MPH on my
speedo. Math and science never fails.
[Edited on 10-14-2019 by PaulW]
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