Name: AMP Terrain Attack M/T A LT 35x12.50R20 121Q E (10 Ply)
Brand: Amp
SKU: AMP35125020MTQ
Price: 260.93 USD
Availability: InStock

Question 1

Does the AMP Terrain Attack M/T A 35x12.50R20 fit a stock F-150 without a lift?

Accepted Answer

No. The 35x12.50R20 size requires a minimum 3–4" lift on most F-150 configurations to clear fenders and upper control arms without rubbing. A leveling kit alone is typically insufficient. Confirm wheel backspacing (recommended 4.5"–5") and lift height with your installer before ordering.

Question 2

Will I need to recalibrate my speedometer after installing 35x12.50R20 tires?

Accepted Answer

Most likely, yes. The Terrain Attack M/T A turns 733 revolutions per mile in this size. If your truck came factory-equipped with 265/70R17 or 275/65R18 tires (which run roughly 800–820 revs per mile), your speedometer will over-read by approximately 8–10%. Recalibrate via your truck's tuner, dealer, or a TPMS reset tool.

Question 3

What PSI should I run the Terrain Attack M/T A at on the highway?

Accepted Answer

Set cold inflation to the pressure listed on your vehicle's door placard for your expected load — not the 80 PSI maximum stamped on the tire's sidewall. For most half-ton trucks running mixed on-road and off-road, that means 40–60 PSI cold. Airing down to 20–25 PSI for off-road use activates the sidewall "A" lugs and improves traction on rock and mud.

Question 4

How long do AMP Terrain Attack M/T A tires last with regular rotation?

Accepted Answer

Owners rotating every 5,000 miles consistently report 30,000–40,000 miles of service. The 19/32" starting tread depth is a direct contributor, it gives you more usable rubber before reaching the 2/32" legal wear limit versus competing M/T tires that start shallower.

Question 5

Is LT35x12.50R20 the same as 35x12.50R20? What does the "LT" prefix mean?

Accepted Answer

LT stands for Light Truck construction. the same tire may be listed either way, but the LT prefix signals it meets higher load and durability standards than a passenger (P-metric) equivalent. For Load Range E applications on trucks and Jeeps, always confirm you're ordering the LT-designated version. The AMP Terrain Attack M/T A is LT-rated by design.

AMP Terrain Attack M/T A LT 35x12.50R20 121Q E (10 Ply)

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