Chevrolet Suburban
2007–14 2500

Factory gearing, tires, angles and brakes for the Suburban, and what the usual upgrades do to it. Every number is from the maker's own figures unless the calculators say otherwise. A few figures here are still waiting on a factory document; the calculators mark them.

Use this truck in the calculators

130 in wheelbase

Stock tireLT245/75R1731.5 in tall

Axle ratio3.73Factory

Crawl ratio40.9:1First × low × axle

Angles16.7 · ~20.3 · 20.9°Approach, breakover, departure (~ estimated)

Clearance9 inFactory figure

Highway mpg16EPA

Tire upgrades, worked out

2500 6.0 V8, 3.73s, from LT245/75R17

Tire	Height	Under the diffs	Speedo at 65	RPM at 65	Gears for daily	Open
285/70R17	32.7 in	+0.6 in	63 mph	1,669	Keep 3.73s	Open →
33x10.50R17	33.0 in	+0.8 in	62 mph	1,655	Keep 3.73s	Open →
33x12.50R17	33.0 in	+0.8 in	62 mph	1,655	Keep 3.73s	Open →
255/80R17	33.1 in	+0.8 in	62 mph	1,651	4.1	Open →
285/75R17	33.8 in	+1.2 in	60 mph	1,614	4.1	Open →
315/70R17	34.4 in	+1.4 in	60 mph	1,589	4.1	Open →
35x11.50R17	35.0 in	+1.8 in	58 mph	1,560	4.1	Open →
35x12.50R17	35.0 in	+1.8 in	58 mph	1,560	4.1	Open →
37x11.50R17	37.0 in	+2.8 in	55 mph	1,476	4.56	Open →
37x12.50R17	37.0 in	+2.8 in	55 mph	1,476	4.56	Open →

Stock turns 1,735 rpm at 65 in top gear. Flotation sizes are nominal; most measure a little short mounted.

Size

Wheelbase: 130 in
Height: 76 in
Body: SUV
Stock tires: LT245/75R17

Transmissions and low range

4-speed automatic (4L60-E): 3.06 · 1.63 · 1 · 0.7
6-speed automatic (6L80): 4.03 · 2.36 · 1.53 · 1.15 · 0.85 · 0.67
6-speed automatic (6L90): 4.03 · 2.36 · 1.53 · 1.15 · 0.85 · 0.67
Low range, at2: 2.72:1
Low range, at2hd: 2.72:1

Axles

Front: 1500: GM 8.25 in IFS; 2500: GM 9.25 in IFS
Rear: 1500: GM 8.6 or 9.76 in; 2500: AAM 11.5 in or GM 14-bolt
3.73 ratio: All trims
Ratios made for it: 3.73 · 4.1 · 4.56

Brakes

Front rotor: 12.78 in, 325 mm
Front caliper piston: 57.0 mm
Rear rotor: 12.99 in, 330 mm
Rear: disc (vented, 330 x 29 mm)

Suspension

Front: double wishbone IFS, coilovers
Rear: leaf springs, solid axle
Rear layout: Leaf springs

Fuel economy

EPA highway: 16 mpg
Rated years: 2011–2013, 4WD

Aftermarket bumpers

6 listed

Makers almost never publish angles, bottom heights or how far a bumper tucks, so these fill in as owners measure them. Measured yours? Add it on the rig page and every owner of this Suburban sees how it does on their tires and lift.

Front 4

Buckstop C6CLS Chevy Tahoe 1500 and Suburban 2500 2007-2014 Classic 1 Front Bumper Winch Ready with Tow Hooks$3,772 · winch ready
Chassis Unlimited 2007-2014 Chevy TAHOE/SUBURBAN/AVALANCHE/YUKON Octane Front Winch Bumper$1,907 · winch ready
Iron Bull Bumpers 2007-2014 Chevrolet Tahoe / Suburban 2500 Front Bumper$1,700
TrailReady 10650B Chevy Avalanche 2007-2014 Extreme Duty Front Bumper Winch Ready Base$3,654 · winch ready

Rear 2

Every calculator, set up for the Suburban

Tire sizeBigger tires: speedo, clearance, angles and brakes.Compare tires RegearHighway RPM on every ratio and mpg.Pick your gears Crawl ratioHow slow it creeps, against other trucks.Work out crawl SpeedometerWhat it really reads on new tires.Fix your speedo LinksAnti-squat and what a lift does to it.Check your links Your rigBuild sheet and measured angles.Start a build sheet LeaderboardsWhere the Suburban ranks against every stock truck.See where it ranks

Source: auto-brochures.com.

Use at your own risk. These calculators are here to help you plan and to inform your decisions, not to sign off on a build. Many numbers are estimates worked out from factory figures, and some factory figures are not yet confirmed. Check every number against your own truck, its manuals and a qualified shop before you buy parts, cut, weld, lift, regear or drive on it. Long Range Desert Tools is not liable for anything you do based on these calculators or their results. The full terms are in our policies.

Chevrolet Suburban2007–14 2500