# Seasonal Tire Tips for Heat, Rain and Road Trips

> Inland Empire tire care by season: summer heat, the first rain, mountain trips and holiday drives. Simple checks plus when to bring the car in for a look.

Source: https://goodyearelitetireupland.com/tires/seasonal-tire-tips/  
Last updated: 2026-09-22  
Business: Goodyear Elite Tire Upland, 1775 W Foothill Blvd, Upland, CA 91786, (909) 608-7699

**TL;DR:** Local tires face **summer heat**, dry months, then **first-rain** slick roads. Check pressure cold, watch for **sun cracking**, and inspect tread before trips and the wet season.

In the Inland Empire, the tough tire season is summer: hot pavement raises pressure and speeds up rubber aging. Rain is rare, so worn tread often goes unnoticed until the first storm makes roads slick. Check pressure cold, look for sun cracking, and have tread measured before long trips and before the wet months.

## How does summer heat affect your tires?

Heat raises tire pressure, softens rubber and speeds up aging. Hot freeway pavement on I-10 and SR-210 adds more heat on top of what the tire makes by flexing. An underinflated tire in that setting runs hotter still, which is when tread separations and blowouts become more likely.

Summer habits that help:

- **Check pressure cold,** before the first drive or 3 hours after parking, and set it to the door placard.
- **Never bleed air from a hot tire** to hit the number.
- **Watch loads:** a full car plus a cargo box on a hot day puts extra stress on tires.
- **Park in shade when you can.** Sun exposure dries out sidewalls.
- **Look for cracking** along the sidewall and between tread blocks.

Summer is also hard on batteries and AC. Our [seasonal vehicle care guide](https://goodyearelitetireupland.com/about/resources/seasonal-vehicle-care/) covers the rest of the car.

## What is sidewall cracking and should you worry?

Fine cracks in the sidewall or tread grooves come from sun, heat and age. Tire makers call it weather or ozone cracking, and people often call it dry rot. Shallow surface crazing is common on older tires. Deep cracks that open when you squeeze the tread, or cracks near the bead, mean the tire should be replaced.

Who sees this most:

- Cars that sit outside and are not driven much
- Trailers, RVs and boat trailers parked for months
- Spare tires, especially on truck underbody carriers
- Tires that look deep but are several years old

The last four digits of the DOT code give the build date, so 3223 reads as the 32nd week of 2023. Many vehicle makers advise replacement about 6 years from that week, and most tire makers treat 10 years as the outside limit no matter how deep the tread still looks. Our [date code guide](https://goodyearelitetireupland.com/tires/tire-date-code-guide/) shows where to find it. We photograph cracking during inspections so you can see how deep it goes.

## Why does the first rain matter so much?

After months of dry weather, oil and rubber build up on the road. The first rain lifts that film and makes the surface slick. Tires with shallow tread cannot clear water as well, so stopping distances grow and hydroplaning comes on at lower speeds. That combination catches drivers who have not checked tread since spring.

Before the wet months:

1. Measure tread depth. NHTSA advises replacing a tire at 2/32 inch, where the wear bars sit, and drivers who want grip in a storm shop nearer 4/32 inch. California sets its own floor in Vehicle Code 27465 at just 1/32 inch across any two adjacent grooves, so a tire can be street legal and still be the wrong tire for a wet freeway.
2. Check that wear is even. Worn shoulders clear less water.
3. Replace wipers if they streak. See [wiper blade service](https://goodyearelitetireupland.com/services/wiper-blade-service/).
4. Set pressures, since cooler weather lowers them.

We measure tread at every tire visit and write the 32nds down, so you can see how much the last few months took. The federal tire safety guidance behind these figures is published at [NHTSA](https://www.nhtsa.gov/equipment/tires).

## What should you check before a road trip or mountain drive?

Long drives and mountain grades put steady heat and load on tires. Before you leave, check pressure with the car loaded as it will be, look for damage and uneven wear, and check the spare. If you head up to the mountains in winter, know that chain controls can apply and plan for what your vehicle needs.

Pre-trip checklist:

- Pressure set cold, using the loaded-vehicle number if your manual lists one
- Tread depth and wear pattern checked
- No nails, bulges or cracks
- Spare inflated to the figure on its own sidewall, often about 60 psi on a donut, and driven within the speed limit printed beside it, commonly 50 mph
- Lug nuts torqued in a star pattern to the foot-pound figure your vehicle calls for, and re-torqued 50 to 100 miles after any wheel came off
- If towing, check the trailer tires too. We also offer a [hitch and tow package inspection](https://goodyearelitetireupland.com/services/hitch-tow-package-inspection/).

Planning a move instead? The U-Haul counter is on the same lot. See [U-Haul rentals](https://goodyearelitetireupland.com/u-haul/).

## What is a simple season-by-season tire plan?

Match your tire checks to what the local weather is about to do. Summer is about heat and pressure. Fall is about getting tread ready for rain and busy school traffic. Winter is about wet roads and cold mornings. Spring is a good time to rotate and catch problems before summer.

| Season | Focus |
|---|---|
| Summer | Cold pressure checks, sidewall cracks, heavy loads |
| Fall | Tread measured against 4/32 inch before the rain, alignment check |
| Winter | Wet grip, pressure falling with the morning temperature, TPMS lights |
| Spring | Rotation at 5,000 to 8,000 miles, balance, spare check |

The [seasonal ready bundle](https://goodyearelitetireupland.com/specials/seasonal-ready-bundle/) groups several of these checks into one visit.

## What should a back-to-school or holiday tire check cover?

Late summer and the holidays are when families pack the most miles into a short time: school runs, sports travel and long drives to see relatives. A tire check before those stretches catches problems while there is still time to fix them. It fits in one short visit and pairs well with other seasonal work.

| Check | Why it matters now |
|---|---|
| Pressure on all four and the spare | Late-summer heat and cool fall mornings swing readings |
| Tread depth at the inner, center and outer grooves | Fall rain arrives on tires worn down over summer |
| Sidewall cracks and bulges | Months of sun and hot pavement age rubber |
| Date codes | Older tires lose grip before the tread looks low |
| Rotation due date | Even wear before a long drive |
| Valve caps and stems | Missing caps let grit into the valve |
| Wheel lock key | Make sure it is in the car for a roadside tire change |

Carpool and family vehicles often carry more weight than usual, so use the loaded pressure from your owner manual if it lists one. Check the rest of the car with our [seasonal ready bundle](https://goodyearelitetireupland.com/specials/seasonal-ready-bundle/), or read our tips for [safety-focused parents](https://goodyearelitetireupland.com/about/customer-types/safety-focused-parents/).

## Needed now versus can wait

### Needed now
- Replace tires with deep cracks or exposed cords
- Replace tires near the tread minimum before the rainy season
- Fix a slow leak before a long summer drive

### Can wait
- Rotation before a road trip
- Replacing an aging spare
- Upgrading to a tire with better wet grip

## Our process

1. **Ask about your plans:** Commute, road trip, towing or mountain drive.
2. **Check pressure and tread:** Cold pressure set and tread measured on each tire.
3. **Inspect for heat damage:** Sidewall cracking, bulges and date codes.
4. **Check the spare:** Pressure, age and condition.
5. **Report:** Photos and a written list marked need or want.

## What's included

- Tire pressure check and set
- Tread depth readings
- Sidewall crack inspection
- Date code check
- Spare tire check
- Lug nut check

## Frequently asked questions

### Do I need different tires for summer here?

Most local drivers use all-season tires year round. Pressure, tread depth and age matter more. All-season and summer compounds do stiffen below about 45 degrees Fahrenheit, which is the reason winter rubber exists, though our mornings rarely sit there long. If you drive into snow country, ask us what your vehicle needs for chain controls.

### Why does my tire light come on when the weather cools?

Cooler air lowers tire pressure. Figure on roughly 1 psi lost for each 10 degree Fahrenheit drop outside, so a tire that was already a little soft can slide under the 25 percent warning threshold overnight. Set pressures cold to the door placard and watch whether one tire keeps dropping.

### Are cracked tires safe to drive on?

Light surface crazing is common on older tires. Deep cracks, cracks near the bead, or cracks that open when you flex the tire mean replacement. We can look and show you how deep they go.

### Should I check my tires before a road trip?

Yes. Check pressure with the car loaded, look for damage, and check the spare. Book a quick tire check with us before you leave if you want a second set of eyes.

### When should I get my tires checked before the rainy season?

Before the first real rain is a good target, since that is when worn tread shows up most. A fall check covers tread depth, pressure as mornings cool, and cracks from summer sun. If you plan mountain trips, check chain requirements for your vehicle as well.

### Does parking in the sun damage tires?

Over time, yes. Sunlight and heat break down rubber and speed up sidewall cracking, especially on vehicles that sit for weeks. Shade, a car cover, or simply driving the car regularly helps. Look over older tires for fine cracks each season.

## Related pages

- https://goodyearelitetireupland.com/tires/tire-pressure-care-guide/
- https://goodyearelitetireupland.com/about/resources/seasonal-vehicle-care/
- https://goodyearelitetireupland.com/specials/seasonal-ready-bundle/
- https://goodyearelitetireupland.com/tires/tire-date-code-guide/
- https://goodyearelitetireupland.com/contact/book-appointment/

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Call (909) 608-7699 or book at https://goodyearelitetireupland.com/contact/book-appointment/