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Questions tagged [safety]

Questions relating to the safe use of tools, safety procedures, use of safety equipment and other methods of avoiding harm to yourself or others.

1
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0answers
38 views

Safety Recall - Dealers say “we don't have the parts for this”

So I've been consistently getting "recall" notices for my car and every time I receive one of those mails I immediately call the number on them. I am redirected to a dealer who always answers with the ...
10
votes
3answers
2k views

How are showroom/display vehicles prepared?

These vehicles are kept in buildings, so I imagine there are some safety considerations (e.g. no fuel and oil) being followed? Are they brought in straight from manufacturing so that there is no risk ...
5
votes
1answer
233 views

Safe working technique; four axle stands

I would never dream of going under a car without it adequately supported; axle stands plus wheels, if removed, laid under the sills (rockers). I have a full set of brake lines plus a serious amount ...
2
votes
3answers
188 views

Do you really need to replace split pins? (aka: cotter pins)

Split pins missing. Mechanic 1 told me you must do it, it is essential for safety. Mechanic 2 told me its no big deal only japanese cars have it, you don't see them on german cars and car is still ...
4
votes
3answers
2k views

Cut on the sidewall - is this safe or should i replace?

I am not sure if this is a cosmetic damage or a structural damage in the tire. The tire is a Bridgestone Turanza 225/40R18 in front. About 18k miles and almost 5 years old. I don't know where I got ...
0
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2answers
30 views

Tires of the same model but different sizes - how much difference in quality and performance?

ADAC tested winter tires of size 175/65 R14 T and 205/55 R16 H this year (in English: 175/65 R14, 205/55 R16). I would like to buy a set of size 185/65 R15. Question: Does it make sense to base the ...
2
votes
1answer
558 views

Metalic smell when banging fender panel

I was trying to bang out dents in a fender panel from the backside. Whilst banging I smelt and inhaled a lot of metalic smelling particles go into the air and I inhaled through mouth and nose. I did ...
1
vote
1answer
186 views

Can a rock in a tire tread cause a blow out?

A recent answer included this: Actually rocks in tire treads can be life threatening, if they gradually cut through the rubber and eventually cause a blow-out, and you don't usually get any warning ...
0
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2answers
69 views

Rock in Disk Brake, Sounds Horrible

Short Back story: I bought a Honda Ridgeline Second generation (2016 - current), 11,000 miles from the dealer, with a state inspection performed on the purchase date. The next day and a maybe 35 ...
2
votes
2answers
310 views

Does power steering fluid go bad quickly?

I've always heard that brake fluid goes bad real fast (IIRC, it absorbs the moisture in the air). What about power steering fluid? Can you buy a large container and use it over the years? Or, like ...
1
vote
1answer
70 views

Should I replace my tire

Should I replace my tire or is it fine to drive on
1
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2answers
555 views

Curbed tyre is it safe to drive

I think I may already know the answer to my question, just want some second opinions. I curved my tyre yesterday taking a chunk of rubber out of it. Does it need replacing or is it safe to drive for ...
1
vote
1answer
499 views

Is synthetic oil more harmful than conventional?

To humans, not the engine, obviously. I use conventional oil (5w30) for my truck. When changing the oil, I obviously wear gloves, but inevitably end up getting some on my hands. It never seems like a ...
0
votes
3answers
304 views

How to raise front of car safely?

i need to get under front of car for oil change and some exhaust work. Do I just put front on axle stands and what do I do about back tyres? The might roll either way right? so do I put chock ...
3
votes
2answers
143 views

What damage can you cause by a parking lot collision without visible dents?

Couple of days ago my car was parked in front of another car. Given that I needed more space to get out of the parking spot, I drove backwards and hit the front of the car behind me. I got out of the ...
-2
votes
1answer
74 views

Drive on wheel dolly?

My FWD got a clamp in the rear. Wise to dolly the wheel and drive off? Dolly both rear wheels or just the one? Is it safe on the motorway?
33
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12answers
15k views

Does kicking a tire off your car from underneath it while it's held up by a stable jack pose safety threats?

I just had to put a donut on my car and I used the typical manufacturer car jack that fits into that little slot of metal near your wheel. After I got all the lug nuts out, I tried pulling the wheel ...
2
votes
2answers
64 views

Mixing marine & starting batteries with a switch

I have a truck equipped with some emergency equipment that I'd like to be able to use without running the engine the entire time, and without draining the main starting batteries. There is a 1/2/both/...
4
votes
2answers
65 views

E10 petrol safety

I sometimes visit Finland taking my car, though I am not living there. There's a kind of petrol marked E10. Somewhere I've read that this kind of petrol can be harmful for some kind of cars (for the ...
2
votes
3answers
3k views

Why are multiple grounds in the engine bay/engine important?

On certain cars (perhaps even most? all?), such as the old Toyota MR2 turbo, there are multiple ground points. Some of them are described with pictures here: http://www.mr2oc.com/59-general-mk2-faq-...
2
votes
3answers
12k views

How serious is this tear in the tire sidewall?

I accidentally hit the sidewall of the curb and it caused a small looking rip/tear. Do you think the tire is still good or should I replace it. I have a 4WD.
1
vote
2answers
1k views

Why Don't Medium Duty and Heavy Duty Trucks require Airbags?

Why Don't Medium Duty and Heavy Duty Trucks require Airbags? According to GSO 42 regulation, Passenger Cars, MPV, Trucks or Buses with GVW less than 3500Kg requires an airbag, while for MDT & HDT ...
33
votes
10answers
14k views

Is it safe to use a hydraulic jack as a stand? If not, why?

"If a jack can lift a load, surely it can withstand the load for extended periods of time?!" I've come across some conflicting ideas regarding this subject: The user guide for my low-profile ...
1
vote
2answers
1k views

Piece missing in rubber. Do I need to replace tire?

Do I need to replace this tire? Just noticed. The black rubber part feels awfully thin.
4
votes
4answers
192 views

What are the dangers of driving a repaired car that was in major accident?

When I'm shopping for a second hand car, I often hear an advice to find out if a car has been in a major accident and refrain from buying in this case. When I tried to find out why that is, I was told ...
2
votes
1answer
36 views

Safe way to install infotainment box

I am installing a video interface box into my Mercedes, this enables me to add support for a reversing camera feed. I have positioned the video interface box behind the infotainment screen like so: ...
4
votes
1answer
412 views

What tyre pressures when the light-load / heavy-load difference is large?

I've just bought a second hand VW Golf TSI. Great car. The fuel flap shows the following tyre pressures in bar (1bar = 14.5psi): bar psi | Load | Front | Rear |...
2
votes
1answer
507 views

Side door impact beam damage

If your car (let's just assume some unibody sedan) gets hit in the side door enough to deform the side door impact beam, does that pose a serious threat to the future safety of the car (like in ...
1
vote
0answers
54 views

What effect does exposure to the elements (hot sun & rain) have on cars and motorcycles?

Place: South India. Situation: Parking in an open space with no shade, morning to evening. Temperature: 30 to 40 degrees Celsius. I have parked my car under the hot sun for a week, and I noticed ...
5
votes
3answers
187 views

Is my working area safe?

I'm fairly new to wrenching and I'm looking for feedback on whether my outdoor setup seems safe. I have a gravel driveway area in my backyard where I want to jack my car up and go underneath safely (...
3
votes
1answer
29 views

Do IIHS safety tests changed from year to year?

One can find data on the safety of a car at IIHS' homepage and videos of the tests on IIHS' YouTube channel. These have tests going back many years. Are the tests consistent across the years? I found,...
1
vote
1answer
837 views

Importance of centre bore in hubcentric wheel mount design?

I'm hopeing to settle an argument here. I am of the understanding that the diameter of the centrebore is integral to safety in hubcentric wheel mount design. Does anyone have any well evidenced ...
1
vote
1answer
129 views

Over full oil on a road trip

I've got a 2010 toyota prius. I'm on a road trip and changed the oil right before I took off, unfortunately I was in a hurry and didn't realize I overfilled the oil. (likely 0.5-1.2quarts overfilled ) ...
1
vote
1answer
158 views

Small gouge in edge of tire…

Noticed this on one of my summer tires when I took it out a few weeks ago: No puncture, no air loss, no balance issues. There's a very small bump next to where I'm holding the coin. It's so subtle ...
-1
votes
1answer
85 views

Homemade 'Car' Vehical

I am interested in saving a few grand on a car by fishing parts out of a junkyard, whipping them together, duct-taping a fancy car decal onto it to make it look safe, adding golf-ball shaped holes to ...
17
votes
3answers
31k views

Do these tyre cracks necessitate replacement?

My car has been off the road for a few months, but will be back on it in a few weeks. The other day, I noticed some cracks between the treads on the front tyres. Not sure how long they've been there. ...
2
votes
2answers
2k views

Will my exhaust pipe melt nearby plastic or PVC?

I am converting a van into a tiny home and want to mount my greywater tank in the undercarriage behind the rear axle. I'm worried about radiant heat from the exhaust pipe melting a plastic water tank ...
4
votes
3answers
1k views

Is it necessary to turn off the engine while refuelling?

At petrol stations in Australia, there are always several signs that say "Turn off engine while refuelling" (or something of the sorts). Is this necessary to do, and why, or is just something that is ...
6
votes
3answers
546 views

How to verify the safety of a lift for a full sized pickup?

So I am now the proud owner of a 2007 Chevy Silverado 1500 LT Extended Cab with 151,000 miles on it. Yesterday I needed to do my first oil change on it, and step one is to lift the front end onto jack ...
3
votes
2answers
134 views

Used Michelin tires safe to install?

My Michelin set of 4, set inside a vehicle 4 years; there are NO VISIBLE CRACKS WHATSOEVER and GREAT THREAD DEPTH REMAINS ALMOST LIKE NEW!!!!! My concern is I KNOW NOTHING ABOUT TIRE SAFETY and NEED ...
5
votes
3answers
575 views

Can I insulate my van's floor UNDER the bottom, in the undercarriage?

I recently bought a 2006 Ford E-350 which I am converting into a tiny home for full-time dwelling. My problem is once that I have about 2 inches of vertical clearance from the ceiling. My options are:...
13
votes
3answers
16k views

Can I leave my car on a jack for several days?

I am doing a hub seal replacement on my old Landrover. Sadly I screwed up the new seal by putting it on too far, and then by trying to tweak it back out I wrecked the tension spring inside the seal. ...
6
votes
3answers
3k views

Safe way to get a few more inches under car on flat surface

Working on a 4 door sedan in the garage. Need to go under the car to replace the ABS module. Right now I can reach most of the screws, but if I could get just a few more inches of clearance it would ...
15
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2answers
2k views

What does this symbol of a car balancing on two wheels mean?

The symbol on the left in the image below is ubiquitous, yet so cryptic. What does it mean? Is it just a warning that the car is at risk of toppling over? I tried paging through the owner's manual ...
3
votes
3answers
125 views

What are the safety issues of having a childseat on the front seat?

Assuming the following, are there any safety reason to not put a child in the front seat? I am looking for a technical answer and not opinions e.g. the car chassi is stronger on the rear Assumptions *...
3
votes
2answers
221 views

Must I put chains on all four tires of a vehicle with all-wheel drive (AWD)?

On a car with AWD like the Honda Element that automatically engages drive power on the rear wheels as needed when the front wheels slip, should I install chains (a) on the front wheels only or (b) on ...
6
votes
2answers
24k views

How long to wait for radiator to cool down before working on it?

I need to drive my Integra to a friend's place to work on replacing the radiator. It's been 70 degrees lately, is waiting 1 hour long enough to allow the system to cool down? Any rules of thumb for ...
5
votes
2answers
4k views

What to do about 1 tire mounted on rim in wrong direction?

I put on my winter tires today. For the first time, I noticed that the direction arrows on one of the tires point the wrong way: looking at the outside, the arrows on three tires point ...
17
votes
11answers
13k views

What's the best gear to leave a manual vehicle in when parked? [closed]

I've been told that reverse is the "strongest" gear, so in a manual transmission vehicle you should park your vehicle and leave it in reverse in the event of a parking brake failure. Others have said ...
1
vote
1answer
48 views

Safety for different years

I am considering buying the Ford S-Max, second-hand. I went to euroncap to see safety ratings, but they rate only 2 years: the 2015 model and the 2006 model. I need to make a choice between a few ...