# TOYO Open Country A/T III · 35X12.5R17LT E

Canonical page: https://configmyrig.com/products/toyo-open-country-a-t-iii-35x12-5r17lt-e

AT · 35X12.5R17LT · E · 121R

## Selected configuration

- Part/component: 525R7OCAT3
- Configuration: AT · 35X12.5R17LT · E · 121R
- Listed parts: $421.59 USD / each tire
- Source checked: October 25, 2026 · original catalog snapshot
- Fitment: LC250 comparison candidate. Verify the exact year, grade, dimensions, wheel/brake clearance and supplier approval before ordering.
- Product mass: 65 lb / tire
- Net vehicle addition: Net addition unverified
- Weight basis: Installed net change requires all mounting hardware and factory parts removed; shipping mass is not installed mass.
- Professional install: 1.5–2.5 hr; researched planning estimate
- Basis: Shared professional planning estimate for five wheel/tire assemblies: mounting, balancing, TPMS and refitting review. Count once for the combined job; four assemblies use a 1–2 hr allowance. This is not manufacturer-published time.
- Contents: AT · 35X12.5R17LT · E · 121R
- Critical specifications: AT · 35X12.5R17LT · E · 121R
- Supporting work: 35-inch designation, 34.5-inch listed diameter. This is the E / 121R version, not the lower-capacity C / 111Q variant. The wider footprint needs an exact-offset clearance review.

## Prerequisites

- Matching wheels (check): Confirm existing wheels or choose matching 17″ wheels with a manufacturer-approved rim width, load rating and mounting arrangement.
- Clearance and supporting modifications (check): Review the exact tire size, wheel width/offset, suspension and spare location. Trimming or other modifications are conditional on the specific setup.
- Lug nuts, hub arrangement and TPMS (check): 35-inch designation, 34.5-inch listed diameter. This is the E / 121R version, not the lower-capacity C / 111Q variant. The wider footprint needs an exact-offset clearance review.
- Brake clearance and spare fit (check): Check the exact wheel against the brake system and verify spare usability. Wheel diameter alone is insufficient.

## Seller offers (selected configuration, low to high)

- [Tire Rack](https://www.tirerack.com/tires/tires.jsp?partnum=525R7OCAT3&tireMake=Toyo&tireModel=Open+Country+A%2FT+III): $421.59 USD

Prices are dated snapshots; tax, shipping, installation and unlisted supporting equipment are extra. Availability is not inferred.

## Installation resources

- [Toyo tire mounting and safety guidance](https://www.toyotires.com/safety-info/): official; General professional mounting and service guidance. Manufacturer safety guidance, not a size-specific installation manual. Inflation, load, rim compatibility and LC250 clearance remain configuration dependent.
- [Tire Mount & Balance Tutorial — Full Process](https://www.youtube.com/watch?v=D3etW-RDe4M): reference; General shop procedure. Wheel removal, tire mounting, TPMS, balancing and refitting. Not an exact tire-SKU or LC250 fitment demonstration.

## All documented options

- [AT · 35X12.5R17LT · E · 121R](https://configmyrig.com/products/toyo-open-country-a-t-iii-35x12-5r17lt-e): 525R7OCAT3; $421.59 USD / each tire; 65 lb / tire

## Owner evidence

- [Owner forum report](https://www.reddit.com/r/LandCruisers/comments/1oa5gwr/lc_250_upgraded/): Likes low road noise and on/off-road behavior. Match: Tire family only; do not infer exact size, load range or rubbing. Self-reported owner/use; purchase and configuration not independently verified
- [Owner forum report](https://www.reddit.com/r/overlanding/comments/1k0o1cb/anyone_running_the_toyo_open_countrys_are_they/): Reports years of highway/trail use and acceptable noise in a 4Runner. Match: Tire family only; different vehicle and unconfirmed size. Self-reported owner/use; purchase and configuration not independently verified
- [Owner forum report](https://www.reddit.com/r/overlanding/comments/1k0o1cb/anyone_running_the_toyo_open_countrys_are_they/): Likes trail grip but reports pavement traction breaking sooner than all-season tires during spirited driving. Match: Tire family only; anecdotal traction comparison. Self-reported owner/use; purchase and configuration not independently verified

## Related guidance

- [Planning guide](https://configmyrig.com/guides/wheels-tires-and-clearance)
- [TOYO](https://configmyrig.com/brands/toyo)
- [Wheels & tires](https://configmyrig.com/categories/wheels-and-tires)

AI-assisted planning; exact vehicle/application and current supplier documentation require confirmation.