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The 2004 Chevrolet Silverado is a tough, simple truck. Many are still working hard more than twenty years on.
When tire time comes, one question leads the rest: what size fits? The honest answer is that it depends on how your truck was built.
This guide walks through the stock sizes, how to confirm yours, the biggest tire a stock truck can run, and how to choose well.
What Size Tires Fit a 2004 Silverado?
There is no single stock size for this truck. Trim, cab style, drive type, and wheel package all changed the factory fitment.
Common factory sizes include P245/70R16 and P265/75R16 on many 1500 models. Some trucks came on 17-inch wheels with sizes like P265/70R17.
Treat those as examples, not promises. Your truck’s placard is the final word, and it takes ten seconds to check.
How to Find Your Truck’s Size
Open the driver’s door and look at the jamb. The tire placard lists the factory size and the right cold pressure for it.
The owner’s manual repeats the same details. The sidewall of your current tire shows what is fitted now, which may or may not match the placard.
If the two disagree, trust the placard. A past owner may have changed sizes along the way.
How to Read the Size Code
Take P245/70R16 as an example. The P means passenger construction, and 245 is the width in millimeters.
The 70 is the sidewall height as a share of the width. R means radial, and 16 is the wheel diameter in inches.
Now compare P265/75R16. It is wider, and its taller sidewall makes it stand about two inches taller overall than the 245.
How Big Is a 285/70R17?
Owners ask about this size a lot, so here is the math. A 285/70R17 is about 32.7 inches tall and roughly 11.2 inches wide.
That puts it close to a 33-inch tire. It needs a 17-inch wheel, of course, and on a stock truck it sits near the top of what usually clears.
For a quick comparison, common sizes measure roughly:
- 245/70R16: about 29.5 inches tall
- 265/75R16: about 31.6 inches tall
- 265/70R17: about 31.6 inches tall
- 285/70R17: about 32.7 inches tall
What About the 2500 and 3500?
The heavy-duty trucks play by slightly different rules. Most 2004 Silverado 2500HD and 3500 models came on LT tires over 16-inch wheels, with LT245/75R16 a common factory size.
The LT matters. It stands for light truck construction, with stronger casing and higher load ratings than a P tire of the same size.
If you run a heavy truck, keep LT tires and the load range your placard calls for — usually Load Range E. Diameter is a style choice; load capacity is a safety one.
Do You Need Winter Tires?
That depends on where you live and how much winter driving you do. If your roads see regular snow and ice, winter tires are a real upgrade.
Their softer rubber stays flexible in the cold, and the tread is cut to grip snow. Braking and steering both improve when it is slippery.
A middle path exists, too. Some all-terrain tires carry the three-peak mountain snowflake symbol, which means they met a set snow traction standard.
If you rarely see snow, a good all-season or all-terrain may be enough. The NHTSA tire safety pages explain how tread and pressure affect grip in bad weather.
The Biggest Tire on a Stock Silverado 1500
For a stock 1500 at stock height, about 33 inches is the common ceiling. Sizes near that height, like the 285/70R17 above, are the usual max owners run.
There are trade-offs. Bigger tires can rub at full lock, add road noise, and take the edge off fuel economy and acceleration.
Fit also varies from truck to truck. Worn springs, wheel offset, and brand-to-brand size differences all play a part, so a test fit is wise.
Want more room? On these trucks the front sits on torsion bars, so a leveling kit or a small lift is the usual next step — but that is a bigger job than tires alone.
Heavy-duty trucks follow the same logic. Our guide to the 2002 Chevy 2500HD max tire size shows how the same rules play out on the bigger truck.
How to Choose New Tires
Start with how the truck earns its keep. A daily driver, a tow rig, and a trail truck need different tires.
Check the load rating next. If you tow or haul — a travel trailer or a fifth wheel, for example — the tires must be rated for the weight, and the trailer’s tires matter too.
Then pick the tread type. Highway tires ride quietly and wear slowly, all-terrains trade a little of both for dirt grip, and mud tires give up the most road comfort.
Tread life ratings and warranties can help you compare within a type. Just remember that real life varies with pressure, alignment, and rotation habits.
The Toyo load and inflation tables help you match pressure to load once you pick a size. For a broader look at options, see our guide to what size tires you can put on a Silverado.
Can You Go Taller or Wider Without Mods?
A small step up usually works. A big jump brings side effects you should plan for.
Taller tires make the speedometer and odometer read low, since each turn covers more ground. Our guide to calibrating the speedometer for larger tires covers the fixes.
Wider tires can rub fenders or suspension parts in a turn. After any change, drive slowly, turn lock to lock, and check for contact before you trust the setup.
Don’t Forget the Spare
If you change sizes, think about the spare under the bed. A spare that is much shorter than the other tires is a short, slow trip to the tire shop, not a real fix.
Best practice is a spare that matches your new diameter. Check its pressure once in a while, too — spares lose air like any tire.
Are 295s the Same as 33s?
No. The two numbers measure different things.
A 295 is a width — 295 millimeters across the tread. A 33 is a height — about 33 inches from the ground to the top of the tire.
A 295 tire can be tall or short depending on its sidewall and wheel size. Always compare full sizes, not single numbers.
Will 2015 Silverado Wheels Fit a 2004?
Often, yes. Both trucks use the same six-lug bolt pattern, 6×139.7, so the wheels bolt up.
The hub bore matches on these GM trucks, too, so the wheels center the way they should. Use the right lug nuts for the wheel you fit.
Bolting up is not the whole story, though. Check the wheel diameter, width, and offset, and make sure the wheel clears your brakes.
Also note that the 2015 trucks came with larger stock wheels and tires. The overall size may sit taller than your 2004 setup, which brings back the clearance and speedometer points above.
Conclusion
Find your size on the placard first. Stay at or near stock for the easiest life, or step up toward 33 inches with your eyes open about rubbing, gearing feel, and the speedometer.
Whatever you choose, keep the load rating right and the pressure checked. The USTMA tire care and safety guide is a solid reference for both.
Frequently Asked Questions
What Will New Tires Cost?
There is no single number. Price swings a lot with size, brand, and type, and truck tires in larger sizes cost more than basic car tires.
Budget for the full job, not just the tires. Mounting, balancing, and an alignment after a size change all add to the bill.
Can I Use a Different Size Than Stock?
Yes, within reason. Keep the overall height close to stock, keep the load rating at or above the placard, and confirm clearance at full lock.
Can I Mix Sizes Front and Rear?
It is a bad idea. Different heights make the axles turn at different speeds, which strains a four-wheel-drive system and can confuse braking systems.
Run the same size on all four corners, and rotate them on schedule so they wear evenly.
What Are the Risks of the Wrong Size?
Too big can rub, strain gearing, and throw off the speedometer. Too small or under-rated can hurt braking, handling, and load safety. The placard size avoids all of it.
How Long Should Tires Last on This Truck?
It depends on the tire type, your roads, and how well you care for them. Highway tires on a gentle commute last far longer than mud tires that see gravel every day.
Watch two things: tread depth and age. Replace tires when the tread wears to the wear bars, and have older tires inspected closely — many makers advise extra care from about six years of age and replacement by ten years at the latest, even if tread remains.