295/70/18 is a tire size that you should consider* (3 Viewers)

[steezy]

295/70R18 Geolandars and TRD Pro wheels. This was the set up I had on my Tundra. Look and ride great on the LX, but I need to trim the pinch weld on the driver’s side.
Anyone know a solution for the red hub caps on the Pro wheels? They bug me (and more importantly, my wife).
I think it’d be rad to put some Lexus caps on.
I’d be curious if anyone else has done it.
I’ll take better pics later.

 

[steezy]

Profile. This is in normal mode. I love how stuffed the wheel wells are now.

 

[steezy]

This is the cap I’d like to replace. I’m gonna dig into whether that’s a possibility or not this week. If anyone else has tried it already, please chime in.

It’s ~3.75” or 9.5CM from flange to flange FWIW.

 

[lx200inAR]

This is the cap I’d like to replace. I’m gonna dig into whether that’s a possibility or not this week. If anyone else has tried it already, please chime in.

It’s ~3.75” or 9.5CM from flange to flange FWIW.

View attachment 3953332

One option is the bronze version from the Heritage 200s. I think they are a little difficult to get. But they definitely aren't as blingy

 

[Tennessee80]

So.... Anyone running this size on a Land Cruiser?

 

[RTaylor]

I've barely made 285/70r18 work. I can't imagine going up to 295 with the KDSS arms in the way.

 

[TeCKis300]

I've barely made 285/70r18 work. I can't imagine going up to 295 with the KDSS arms in the way.

What offset are you running? Everything is inter-related with fitment and geometry and there are some key things that can help.

 

[RTaylor]

What offset are you running? Everything is inter-related with fitment and geometry and there are some key things that can help.

Stock wheels, which I like. Are they 60mm? I’m anti spacers and anti cheap alloy wheels.

 

[gray rider]

Interesting topic....

 

[TeCKis300]

Stock wheels, which I like. Are they 60mm? I’m anti spacers and anti cheap alloy wheels.

I'm with you on anti cheap wheels. Nothing is stronger and higher quality than stockies! Yes, OEM is +60mm. I'm generally against certain things but it's all a giant trade space and balance of considerations.

If I can share some thoughts - for a 285/70r18 that specs at 33.7" x 11.2", you really want an offset of +35mm. To maximize steering feel, cornering and handling traction, reduce bump steer, and some more track width to offset the increased center of gravity. All pretty major functional considerations. It's why OEM Rock Warriors that were made with 285/70R17s (32.7" x 11.2") tires in mind spec at +50mm offset. Offset is integral to proper suspension geometry.

Are spacers a less evil than trading the important factors above? Then consider that it can also help fitment and clearance?

In my mind, as long as spacers are installed following instructions, with an ample dose of common sense, it's potentially no different than any other major part needing to be properly bolted on the car.

 

[RTaylor]

I'm with you on anti cheap wheels. Nothing is stronger and higher quality than stockies! Yes, OEM is +60mm. I'm generally against certain things but it's all a giant trade space and balance of considerations.

If I can share some thoughts - for a 285/70r18 that specs at 33.7" x 11.2", you really want an offset of +35mm. To maximize steering feel, cornering and handling traction, reduce bump steer, and some more track width to offset the increased center of gravity. All pretty major functional considerations. It's why OEM Rock Warriors that were made with 285/70R17s (32.7" x 11.2") tires in mind spec at +50mm offset. Offset is integral to proper suspension geometry.

Are spacers a less evil than trading the important factors above? Then consider that it can also help fitment and clearance?

In my mind, as long as spacers are installed following instructions, with an ample dose of common sense, it's potentially no different than any other major part needing to be properly bolted on the car.

I did look into 1" spacers as the equivalent clearance, but the extra stress of spacers doesn't work for me. I know that wheel spacers work just fine for plenty of others.

How do we get OEM Toyota quality wheels in 18x8.5 with +35mm offset? The OZ Rally Raids are the closest I could find.

 

[Pskhaat]

for a 285/70r18 that specs at 33.7" x 11.2", you really want an offset of +35

How do you calculate a 25mm offset difference. In my own calculations from the kingpin inclination angle, I get about 8mm adjustment for 33” tire. That should properly account for KPI, scrub, and the Ackerman angle for steering geometry.

 

[TimCFJ40]

I did look into 1" spacers as the equivalent clearance, but the extra stress of spacers doesn't work for me. I know that wheel spacers work just fine for plenty of others.

How do we get OEM Toyota quality wheels in 18x8.5 with +35mm offset? The OZ Rally Raids are the closest I could find.

Spacers don't add any stress to the vehicle that isn't also added with a similar offset aftermarket wheel.

There is the added opportunity for failure with an additional interface surface and a second set of lugs that can be improperly torqued, but there is no difference to the truck between spacers on stock wheels versus aftermarket wheels with the same offset as the stock wheel plus spacer.

 

[04UZJ100]

Spacers don't add any stress to the vehicle that isn't also added with a similar offset aftermarket wheel.

There is the added opportunity for failure with an additional interface surface and a second set of lugs that can be improperly torqued, but there is no difference to the truck between spacers on stock wheels versus aftermarket wheels with the same offset as the stock wheel plus spacer.

I am not sure that’s accurate. @TeCKis300

Is that true? I was under impression and thought process that wheel spacers increase leverage on the hub whereas offset wheels do not.

 

[Pskhaat]

I was under impression and thought process that wheel spacers increase leverage on the hub whereas offset wheels do not.

They both equally modify fulcrum and the steering moments.

 

[WickedCrawler]

I am not sure that’s accurate. @TeCKis300

Is that true? I was under impression and thought process that wheel spacers increase leverage on the hub whereas offset wheels do not.

I would say leverage is leverage no matter how it’s created

 

[RTaylor]

Spacers don't add any stress to the vehicle that isn't also added with a similar offset aftermarket wheel.

There is the added opportunity for failure with an additional interface surface and a second set of lugs that can be improperly torqued, but there is no difference to the truck between spacers on stock wheels versus aftermarket wheels with the same offset as the stock wheel plus spacer.

I’m not trying to win the wheel spacer argument. I pretty much agree with the mechanics. Having extra lug nuts does add to potential balance issues and failure points. I’m not the only one who wrenches on my LC, so I didn’t want the risk of someone else messing with my spacers.

Also, with a 1” spacer, the stock studs are too long and I didn’t want to shave them down or replace them.

 

[TeCKis300]

Agreed with @Pskhaat and @WickedCrawler . It's the net offset, whether by spacer or wheel spec, that puts more leverage and load on the hub.

There's also the factor that offsets outside of geometry can put more load on the steering rack.

How do you calculate a 25mm offset difference. In my own calculations from the kingpin inclination angle, I get about 8mm adjustment for 33” tire. That should properly account for KPI, scrub, and the Ackerman angle for steering geometry.

I'm just using a linear approximation using factory and Rock Warriors. Perfect is not necessary and close goes a long way.

Rough approximation.

• Stock is 60mm for a 31.2" tire
• +50 for a 32.7" tire (a la rock warrior)
• +48mm for a 33" tire
• +40mm for a 34" tire
• +32mm for a 35" tire
• +24mm for a 36" tire

 

[Pskhaat]

Agreed with @Pskhaat and @WickedCrawler . It's the net offset, whether by spacer or wheel spec, that puts more leverage and load on the hub.

There's also the factor that offsets outside of geometry can put more load on the steering rack.



I'm just using a linear approximation using factory and Rock Warriors. Perfect is not necessary and close goes a long way.

Rough approximation.

• Stock is 60mm for a 31.2" tire
• +50 for a 32.7" tire (a la rock warrior)
• +48mm for a 33" tire
• +40mm for a 34" tire
• +32mm for a 35" tire
• +24mm for a 36" tire

Very very interesting. Was the rock warrior with 10mm delta specifically for that 33"? Taller? Your logic makes sense, just seems crazy for a 35+.

I need to go back and search the exact KPI.

 

[TeCKis300]

Very very interesting. Was the rock warrior with 10mm delta specifically for that 33"? Taller? Your logic makes sense, just seems crazy for a 35+.

I need to go back and search the exact KPI.

Yes, the RWs were designed specifically for this upsized tire size.

https://www.toyotapartsdeal.com/resources/installation/TPD/tundra_sequoia_land%20cruiser%20trd%20alloy%20wheel%20ptr45-34070-34120%20issf.pdf

I've run enough tires sizes to get a feel for offsets. Including a 305/55R20 (33.2") with a +35. It was just okay with that size with some torque steer. +35 worked perfect for 35x12.5s. And now that I'm into 37s and +28, it's pretty good. It's important to try to get right as a rig with bad offsets really does compromise quite a bit in performance.